Monthly Hours
1921-07-01 203.600
1921-08-01 214.600
1921-09-01 204.800
1921-10-01 214.200
1921-11-01 202.800
1921-12-01 203.900
1922-01-01 203.700
1922-02-01 190.000
1922-03-01 215.700
1922-04-01 200.600
1922-05-01 210.600
1922-06-01 209.100
1922-07-01 217.800
1922-08-01 236.400
1922-09-01 228.600
1922-10-01 232.500
1922-11-01 220.600
1922-12-01 220.800
1923-01-01 225.900
1923-02-01 202.500
1923-03-01 228.000
1923-04-01 215.000
1923-05-01 222.800
1923-06-01 217.500
1923-07-01 215.900
1923-08-01 222.600
1923-09-01 207.900
1923-10-01 226.000
1923-11-01 207.700
1923-12-01 204.600
1924-01-01 215.200
1924-02-01 202.800
1924-03-01 215.300
1924-04-01 209.300
1924-05-01 211.900
1924-06-01 203.000
1924-07-01 209.800
1924-08-01 210.100
1924-09-01 208.000
1924-10-01 221.500
1924-11-01 202.600
1924-12-01 212.800
1925-01-01 216.500
1925-02-01 194.600
1925-03-01 213.800
1925-04-01 209.000
1925-05-01 208.800
1925-06-01 210.500
1925-07-01 213.600
1925-08-01 213.000
1925-09-01 208.500
1925-10-01 220.900
1925-11-01 205.500
1925-12-01 213.000
1926-01-01 209.800
1926-02-01 195.900
1926-03-01 220.400
1926-04-01 210.500
1926-05-01 210.600
1926-06-01 211.600
1926-07-01 213.200
1926-08-01 215.100
1926-09-01 210.000
1926-10-01 217.200
1926-11-01 209.600
1926-12-01 214.500
1927-01-01 211.300
1927-02-01 193.200
1927-03-01 218.800
1927-04-01 210.300
1927-05-01 211.000
1927-06-01 211.100
1927-07-01 206.700
1927-08-01 217.700
1927-09-01 207.400
1927-10-01 214.700
1927-11-01 205.000
1927-12-01 208.200
1928-01-01 208.600
1928-02-01 198.200
1928-03-01 216.300
1928-04-01 204.200
1928-05-01 213.200
1928-06-01 208.100
1928-07-01 207.200
1928-08-01 217.200
1928-09-01 202.700
1928-10-01 221.300
1928-11-01 205.900
1928-12-01 203.800
1929-01-01 214.100
1929-02-01 193.700
1929-03-01 213.800
1929-04-01 211.300
1929-05-01 214.700
1929-06-01 206.500
1929-07-01 214.400
1929-08-01 217.600
1929-09-01 203.500
1929-10-01 220.300
1929-11-01 203.700
1929-12-01 204.900
1930-01-01 211.000
1930-02-01 189.800
1930-03-01 208.600
1930-04-01 206.100
1930-05-01 206.800
1930-06-01 198.600
1930-07-01 202.500
1930-08-01 201.700
1930-09-01 196.300
1930-10-01 207.800
1930-11-01 189.200
1930-12-01 196.100
1931-01-01 197.100
1931-02-01 178.300
1931-03-01 198.500
1931-04-01 195.700
1931-05-01 193.800
1931-06-01 194.000
1931-07-01 195.100
1931-08-01 191.400
1931-09-01 186.500
1931-10-01 193.800
1931-11-01 177.700
1931-12-01 183.900
1932-01-01 181.000
1932-02-01 176.300
1932-03-01 192.200
1932-04-01 182.800
1932-05-01 181.700
1932-06-01 180.800
1932-07-01 175.000
1932-08-01 182.700
1932-09-01 175.100
1932-10-01 181.800
1932-11-01 175.100
1932-12-01 177.900
1933-01-01 177.300
1933-02-01 162.800
1933-03-01 179.800
1933-04-01 171.600
1933-05-01 182.900
1933-06-01 182.300
1933-07-01 183.600
1933-08-01 191.700
1933-09-01 181.500
1933-10-01 188.700
1933-11-01 178.300
1933-12-01 179.400
1934-01-01 186.600
1934-02-01 172.700
1934-03-01 193.700
1934-04-01 182.000
1934-05-01 190.600
1934-06-01 187.800
1934-07-01 185.600
1934-08-01 192.800
1934-09-01 180.000
1934-10-01 195.400
1934-11-01 181.700
1934-12-01 183.500
1935-01-01 195.400
1935-02-01 174.400
1935-03-01 190.400
1935-04-01 187.400
1935-05-01 191.300
1935-06-01 184.500
1935-07-01 190.300
1935-08-01 193.800
1935-09-01 183.400
1935-10-01 200.500
1935-11-01 185.900
1935-12-01 190.400
1936-01-01 201.600
1936-02-01 193.600
1936-03-01 201.400
1936-04-01 195.600
1936-05-01 193.400
1936-06-01 195.000
1936-07-01 200.100
1936-08-01 198.000
1936-09-01 195.400
1936-10-01 207.100
1936-11-01 191.100
1936-12-01 202.200
1937-01-01 198.500
1937-02-01 184.500
1937-03-01 209.100
1937-04-01 200.000
1937-05-01 198.700
1937-06-01 200.200
1937-07-01 201.400
1937-08-01 199.800
1937-09-01 195.000
1937-10-01 200.200
1937-11-01 190.000
1937-12-01 194.900
1938-01-01 191.700
1938-02-01 176.600
1938-03-01 201.500
1938-04-01 191.000
1938-05-01 191.400
1938-06-01 193.800
1938-07-01 191.900
1938-08-01 202.600
1938-09-01 194.500
1938-10-01 201.800
1938-11-01 193.600
1938-12-01 198.200
1939-01-01 197.300
1939-02-01 180.600
1939-03-01 205.400
1939-04-01 190.300
1939-05-01 200.800
1939-06-01 198.600
1939-07-01 194.800
1939-08-01 205.000
1939-09-01 197.500
1939-10-01 206.900
1939-11-01 196.900
1939-12-01 195.400
1940-01-01 206.100
1940-02-01 187.900
1940-03-01 199.500
1940-04-01 198.500
1940-05-01 201.400
1940-06-01 194.300
1940-07-01 202.900
1940-08-01 207.100
1940-09-01 193.800
1940-10-01 210.100
1940-11-01 197.000
1940-12-01 201.000
1941-01-01 207.700
1941-02-01 187.400
1941-03-01 208.900
1941-04-01 203.400
1941-05-01 209.700
1941-06-01 205.800
1941-07-01 211.900
1941-08-01 211.400
1941-09-01 206.000
1941-10-01 218.200
1941-11-01 199.800
1941-12-01 211.200
1942-01-01 213.900
1942-02-01 193.100
1942-03-01 215.000
1942-04-01 209.500
1942-05-01 209.300
1942-06-01 209.900
1942-07-01 212.800
1942-08-01 216.800
1942-09-01 212.600
1942-10-01 226.500
1942-11-01 211.200
1942-12-01 222.000
1943-01-01 219.600
1943-02-01 204.900
1943-03-01 230.700
1943-04-01 219.900
1943-05-01 221.300
1943-06-01 220.700
1943-07-01 224.300
1943-08-01 229.100