Month	Marks Per Metric Ton
1879-01-01	173.000
1879-02-01	174.000
1879-03-01	176.800
1879-04-01	179.500
1879-05-01	192.500
1879-06-01	188.500
1879-07-01	194.000
1879-08-01	200.000
1879-09-01	206.500
1879-10-01	229.000
1879-11-01	226.500
1879-12-01	234.000
1880-01-01	232.200
1880-02-01	228.500
1880-03-01	228.000
1880-04-01	217.000
1880-05-01	221.800
1880-06-01	221.500
1880-07-01	226.300
1880-08-01	204.000
1880-09-01	204.200
1880-10-01	212.500
1880-11-01	212.100
1880-12-01	206.000
1881-01-01	203.000
1881-02-01	206.000
1881-03-01	208.500
1881-04-01	219.200
1881-05-01	224.400
1881-06-01	215.500
1881-07-01	210.900
1881-08-01	221.100
1881-09-01	233.500
1881-10-01	234.100
1881-11-01	235.500
1881-12-01	221.800
1882-01-01	219.000
1882-02-01	221.000
1882-03-01	219.500
1882-04-01	228.800
1882-05-01	227.800
1882-06-01	211.200
1882-07-01	213.000
1882-08-01	206.800
1882-09-01	172.800
1882-10-01	179.900
1882-11-01	174.500
1882-12-01	176.200
1883-01-01	176.800
1883-02-01	185.000
1883-03-01	184.500
1883-04-01	189.800
1883-05-01	196.000
1883-06-01	187.000
1883-07-01	195.200
1883-08-01	197.700
1883-09-01	185.700
1883-10-01	177.200
1883-11-01	178.800
1883-12-01	179.100
1884-01-01	172.900
1884-02-01	173.500
1884-03-01	171.400
1884-04-01	166.200
1884-05-01	169.200
1884-06-01	170.500
1884-07-01	167.800
1884-08-01	153.100
1884-09-01	147.700
1884-10-01	149.000
1884-11-01	152.100
1884-12-01	153.000
1885-01-01	159.400
1885-02-01	162.500
1885-03-01	164.800
1885-04-01	171.000
1885-05-01	174.000
1885-06-01	168.500
1885-07-01	165.400
1885-08-01	155.400
1885-09-01	152.500
1885-10-01	157.000
1885-11-01	153.800
1885-12-01	146.600
1886-01-01	147.000
1886-02-01	149.400
1886-03-01	153.800
1886-04-01	153.500
1886-05-01	152.000
1886-06-01	145.200
1886-07-01	147.600
1886-08-01	156.500
1886-09-01	151.800
1886-10-01	150.000
1886-11-01	150.200
1886-12-01	158.900
1887-01-01	163.300
1887-02-01	161.200
1887-03-01	161.200
1887-04-01	169.000
1887-05-01	181.600
1887-06-01	185.200
1887-07-01	181.300
1887-08-01	153.000
1887-09-01	147.500
1887-10-01	150.000
1887-11-01	159.000
1887-12-01	160.200
1888-01-01	162.600
1888-02-01	161.000
1888-03-01	161.200
1888-04-01	169.900
1888-05-01	174.500
1888-06-01	166.500
1888-07-01	165.900
1888-08-01	172.200
1888-09-01	183.500
1888-10-01	187.400
1888-11-01	185.300
1888-12-01	176.800
1889-01-01	192.300
1889-02-01	191.900
1889-03-01	188.400
1889-04-01	185.000
1889-05-01	184.000
1889-06-01	183.200
1889-07-01	186.800
1889-08-01	189.000
1889-09-01	188.000
1889-10-01	184.700
1889-11-01	185.000
1889-12-01	194.300
1890-01-01	196.600
1890-02-01	195.600
1890-03-01	194.600
1890-04-01	194.700
1890-05-01	198.200
1890-06-01	197.000
1890-07-01	209.100
1890-08-01	195.000
1890-09-01	192.000
1890-10-01	191.200
1890-11-01	191.200
1890-12-01	189.500
1891-01-01	189.600
1891-02-01	196.000
1891-03-01	209.200
1891-04-01	226.400
1891-05-01	241.000
1891-06-01	232.500
1891-07-01	237.300
1891-08-01	236.200
1891-09-01	234.100
1891-10-01	226.600
1891-11-01	233.600
1891-12-01	228.300
1892-01-01	214.300
1892-02-01	203.800
1892-03-01	195.600
1892-04-01	190.000
1892-05-01	189.800
1892-06-01	182.700
1892-07-01	174.100
1892-08-01	159.400
1892-09-01	152.800
1892-10-01	153.300
1892-11-01	152.500
1892-12-01	148.600
1893-01-01	151.700
1893-02-01	152.200
1893-03-01	149.600
1893-04-01	155.300
1893-05-01	159.700
1893-06-01	157.800
1893-07-01	158.600
1893-08-01	155.300
1893-09-01	149.500
1893-10-01	142.900
1893-11-01	142.200
1893-12-01	143.600
1894-01-01	143.500
1894-02-01	141.600
1894-03-01	141.000
1894-04-01	141.400
1894-05-01	135.700
1894-06-01	137.800
1894-07-01	138.500
1894-08-01	135.100
1894-09-01	131.800
1894-10-01	124.600
1894-11-01	129.000
1894-12-01	133.700
1895-01-01	136.400
1895-02-01	134.700
1895-03-01	139.700
1895-04-01	143.200
1895-05-01	154.700
1895-06-01	155.800
1895-07-01	143.900
1895-08-01	140.000
1895-09-01	134.900
1895-10-01	138.800
1895-11-01	142.700
1895-12-01	144.700
1896-01-01	150.600
1896-02-01	156.300
1896-03-01	156.000
1896-04-01	157.300
1896-05-01	156.700
1896-06-01	147.000
1896-07-01	141.600
1896-08-01	144.100
1896-09-01	152.800
1896-10-01	164.200
1896-11-01	174.200
1896-12-01	173.300
1897-01-01	177.300
1897-02-01	171.600
1897-03-01	165.300
1897-04-01	160.600
1897-05-01	161.600
1897-06-01	160.000
1897-07-01	163.700
1897-08-01	180.600
1897-09-01	184.700
1897-10-01	182.300
1897-11-01	187.500
1897-12-01	188.700
1898-01-01	191.700
1898-02-01	196.300
1898-03-01	196.000
1898-04-01	213.600
1898-05-01	244.400
1898-06-01	209.900
1898-07-01	200.500
1898-08-01	181.800
1898-09-01	173.700
1898-10-01	174.100
1898-11-01	172.300
1898-12-01	169.000
1899-01-01	168.200
1899-02-01	163.100
1899-03-01	158.500
1899-04-01	158.600
1899-05-01	159.500
1899-06-01	162.600
1899-07-01	159.000
1899-08-01	155.900
1899-09-01	152.500
1899-10-01	153.000
1899-11-01	149.800
1899-12-01	149.100
1900-01-01	145.800
1900-02-01	149.100
1900-03-01	148.000
1900-04-01	148.900
1900-05-01	152.500
1900-06-01	156.800
1900-07-01	156.800
1900-08-01	155.700
1900-09-01	155.600
1900-10-01	153.500
1900-11-01	149.500
1900-12-01	149.500
1901-01-01	154.500
1901-02-01	158.200
1901-03-01	159.200
1901-04-01	167.400
1901-05-01	174.200
1901-06-01	169.500
1901-07-01	164.000
1901-08-01	166.200
1901-09-01	159.800
1901-10-01	155.800
1901-11-01	163.200
1901-12-01	171.200
1902-01-01	171.500
1902-02-01	170.800
1902-03-01	169.000
1902-04-01	167.000
1902-05-01	170.200
1902-06-01	166.800
1902-07-01	167.200
1902-08-01	158.200
1902-09-01	155.000
1902-10-01	151.500
1902-11-01	152.800
1902-12-01	157.200
1903-02-01	156.200
1903-03-01	155.600
1903-04-01	158.200
1903-05-01	165.500
1903-06-01	166.200
1903-07-01	169.100
1903-08-01	163.900
1903-09-01	158.800
1903-10-01	157.000
1903-11-01	159.300
1903-12-01	162.700
1904-01-01	163.200
1904-02-01	169.600
1904-03-01	173.600
1904-04-01	174.400
1904-05-01	175.700
1904-06-01	173.200
1904-07-01	173.200
1904-08-01	178.800
1904-09-01	178.300
1904-10-01	177.700
1904-11-01	176.300
1904-12-01	178.500
1905-01-01	177.000
1905-02-01	176.500
1905-03-01	173.600
1905-04-01	171.900
1905-05-01	175.000
1905-06-01	173.900
1905-07-01	173.000
1905-08-01	169.600
1905-09-01	170.000
1905-10-01	174.300
1905-11-01	179.300
1905-12-01	183.100
1906-01-01	182.500
1906-02-01	179.000
1906-03-01	175.500
1906-04-01	182.300
1906-05-01	184.800
1906-06-01	182.600
1906-07-01	181.700
1906-08-01	174.200
1906-09-01	174.900
1906-10-01	178.100
1906-11-01	178.500
1906-12-01	181.300
1907-01-01	179.300
1907-02-01	184.700
1907-03-01	188.600
1907-04-01	193.900
1907-05-01	203.900
1907-06-01	205.400
1907-07-01	208.700
1907-08-01	213.200
1907-09-01	224.700
1907-10-01	228.400
1907-11-01	226.100
1907-12-01	218.400
1908-01-01	221.000
1908-02-01	212.200
1908-03-01	208.000
1908-04-01	208.700
1908-05-01	220.600
1908-06-01	212.200
1908-07-01	221.300
1908-08-01	204.000
1908-09-01	206.500
1908-10-01	204.900
1908-11-01	206.800
1908-12-01	208.600
1909-01-01	209.700
1909-02-01	219.600
1909-03-01	230.800
1909-04-01	242.500
1909-05-01	259.300
1909-06-01	268.000
1909-07-01	260.800
1909-08-01	241.800
1909-09-01	213.300
1909-10-01	220.300
1909-11-01	217.800
1909-12-01	222.700
1910-01-01	227.100
1910-02-01	227.600
1910-03-01	224.000
1910-04-01	225.200
1910-05-01	215.300
1910-06-01	199.700
1910-07-01	211.600
1910-08-01	198.500
1910-09-01	203.200
1910-10-01	201.100
1910-11-01	200.800
1910-12-01	204.300
1911-01-01	201.600
1911-02-01	198.800
1911-03-01	198.500
1911-04-01	200.000
1911-05-01	207.100
1911-06-01	207.000
1911-07-01	213.300
1911-08-01	202.900
1911-09-01	206.200
1911-10-01	204.800
1911-11-01	203.400
1911-12-01	204.500
1912-01-01	211.200
1912-02-01	212.400
1912-03-01	212.200
1912-04-01	227.800
1912-05-01	231.200
1912-06-01	231.800
1912-07-01	228.500
1912-08-01	211.800
1912-09-01	214.600
1912-10-01	211.600
1912-11-01	205.800
1912-12-01	205.500
1913-01-01	200.800
1913-02-01	200.000
1913-03-01	201.200
1913-04-01	206.600
1913-05-01	208.600
1913-06-01	204.500
1913-07-01	203.700
1913-08-01	199.500
1913-09-01	198.400
1913-10-01	185.700
1913-11-01	186.000
1913-12-01	191.100
1914-01-01	191.000
1914-02-01	192.300
1914-03-01	194.100
1914-04-01	193.600
1914-05-01	206.800
1914-06-01	209.500
1914-07-01	206.300
1914-08-01	225.500
1914-09-01	240.200
1914-10-01	248.600
1914-11-01	240.800
1914-12-01	242.500
1915-01-01	238.900
1915-02-01	236.600
1915-03-01	233.900
1915-04-01	234.300
1915-05-01	238.000
1915-06-01	238.800
1915-07-01	239.600
1915-08-01	222.100
1915-09-01	225.200
1915-10-01	225.000
1915-11-01	220.500
1915-12-01	211.500
1916-01-01	214.400
1916-02-01	215.200
1916-03-01	210.000
1916-04-01	207.300
1916-05-01	209.300
1916-06-01	205.600
1916-07-01	198.800
1916-08-01	211.100
1916-09-01	205.000
1916-10-01	202.400
1916-11-01	197.000
1916-12-01	194.600
1917-01-01	188.600
1917-02-01	186.000
1917-03-01	187.700
1917-04-01	168.600
1917-05-01	166.700
1917-06-01	153.700
1917-07-01	152.800
1917-08-01	200.100
1917-09-01	180.700
1917-10-01	167.000
1917-11-01	175.400
1917-12-01	214.900
1918-01-01	233.700
1918-02-01	231.000
1918-03-01	233.900
1918-04-01	238.200
1918-05-01	237.000
1918-06-01	227.200
1918-07-01	210.300
1918-08-01	272.200
1918-09-01	226.200
1918-10-01	206.600
1918-11-01	183.800
1918-12-01	164.800
1919-01-01	166.500
1919-02-01	149.500
1919-03-01	131.300
1919-04-01	108.300
1919-05-01	106.200
1919-06-01	97.4000
1919-07-01	90.5000
1919-08-01	201.800
1919-09-01	158.000
1919-10-01	124.000
1919-11-01	82.8000
1919-12-01	67.8000
1920-01-01	48.9000
1920-02-01	32.0000
1920-03-01	37.8000
1920-04-01	53.2000
1920-05-01	68.2000
1920-06-01	81.0000
1920-07-01	80.3000
1920-08-01	154.000
1920-09-01	123.500
1920-10-01	99.8000
1920-11-01	84.6000
1920-12-01	89.5000
1921-01-01	100.600
1921-02-01	106.500
1921-03-01	104.600
1921-04-01	102.800
1921-05-01	104.800
1921-06-01	94.2000
1921-07-01	85.1000
1921-08-01	220.500
1921-09-01	175.400
1921-10-01	143.400
1921-11-01	120.600
1921-12-01	157.400
1922-01-01	170.600
1922-02-01	196.400
1922-03-01	211.300
1922-04-01	221.600
1922-05-01	209.200
1922-06-01	205.900
1922-07-01	191.400
1922-08-01	171.700
1922-09-01	170.100
1922-10-01	183.700
1922-11-01	151.300
1922-12-01	166.900
1923-01-01	144.600
1923-02-01	174.600
1923-03-01	158.900
1923-04-01	189.300
1923-05-01	151.100
1923-06-01	155.500
1923-07-01	209.000
1923-08-01	138.800
1923-09-01	143.700
1923-10-01	138.400
1923-11-01	193.200
1923-12-01	170.600
1924-01-01	158.900
1924-02-01	160.500
1924-03-01	167.600
1924-04-01	173.600
1924-05-01	162.000
1924-06-01	144.900
1924-07-01	165.100
1924-08-01	198.800
1924-09-01	225.100
1924-10-01	226.500
1924-11-01	212.000
1924-12-01	222.200
1925-01-01	253.800
1925-02-01	252.200
1925-03-01	252.100
1925-04-01	247.200
1925-05-01	262.600
1925-06-01	267.800
1925-08-01	239.700
1925-09-01	213.200
1925-10-01	211.600
1925-11-01	229.900
1925-12-01	250.000
1926-01-01	248.800
1926-02-01	246.800
1926-03-01	256.600
1926-04-01	289.100
1926-05-01	296.100
1926-08-01	269.700
1926-09-01	263.100
1926-10-01	265.700
1926-11-01	275.500
1926-12-01	269.200
1927-01-01	266.600
1927-02-01	266.000
1927-03-01	268.400
1927-04-01	273.600
1927-05-01	298.200
1927-06-01	303.900
1927-08-01	275.600
1927-09-01	259.200
1927-10-01	249.900
1927-11-01	242.500
1927-12-01	234.700
1928-01-01	234.800
1928-02-01	229.000
1928-03-01	244.300
1928-04-01	263.500
1928-05-01	265.200
1928-06-01	255.800
1928-07-01	245.900
1928-08-01	229.400
1928-09-01	209.500
1928-10-01	213.100
1928-11-01	211.900
1928-12-01	205.300
1929-01-01	209.200
1929-02-01	217.200
1929-03-01	223.400
1929-04-01	224.800
1929-05-01	217.800
1929-06-01	214.900
1929-07-01	250.500
1929-08-01	245.500
1929-09-01	227.000
1929-10-01	230.400
1929-11-01	231.300
1929-12-01	241.300
1930-01-01	246.900
1930-02-01	234.200
1930-03-01	239.800
1930-04-01	269.200
1930-05-01	288.700
1930-06-01	299.800
1930-07-01	287.800
1930-08-01	250.100
1930-09-01	239.100
1930-10-01	226.400
1930-11-01	247.300
1930-12-01	247.600
1931-01-01	259.200
1931-02-01	273.200
1931-03-01	287.100
1931-04-01	288.400
1931-05-01	282.300
1931-06-01	272.400
1931-07-01	244.600
1931-08-01	208.100
1931-09-01	213.400
1931-10-01	215.800
1931-11-01	226.000
1931-12-01	214.700
1932-01-01	227.400
1932-02-01	245.200
1932-03-01	248.100
1932-04-01	262.500
1932-05-01	272.500
1932-06-01	256.000
1932-07-01	238.100
1932-08-01	210.600
1932-09-01	208.800
1932-10-01	198.700
1932-11-01	197.700
1932-12-01	188.700
1933-01-01	185.500
1933-02-01	192.700
1933-03-01	198.500
1933-04-01	196.100
1933-05-01	197.800
1933-06-01	191.000
1933-07-01	187.600
1933-08-01	174.300
1933-09-01	178.200
1933-10-01	189.300
1933-11-01	190.000
1933-12-01	190.600
1934-01-01	192.100
1934-02-01	192.300
1934-03-01	193.100
1934-04-01	195.000
1934-05-01	197.000
1934-06-01	200.000
1934-07-01	199.200
1934-08-01	199.000
1934-09-01	200.000
1934-10-01	202.000
1934-11-01	204.000
1934-12-01	205.500
1935-01-01	207.000
1935-02-01	208.500
1935-03-01	210.000
1935-04-01	211.000
1935-05-01	212.000
1935-06-01	212.000
1935-07-01	212.000