Year	Millions Of Metric Tons
1902	7.44000
1903	7.90000
1904	5.80000
1905	9.55000
1906	7.19000
1907	7.18000
1908	7.79000
1909	8.22000
1910	7.74000
1911	5.76000
1912	9.54000
1913	7.99000
1914	6.06000
1915	1.73000
1916	2.78000
1917	2.71000
1918	1.48000
1919	1.72000
1920	2.93000
1921	2.44000
1922	3.96000
1923	4.46000
1924	6.46000
1925	5.98000
1926	5.45000
1927	6.76000
1928	6.56000
1929	7.89000
1930	10.8100
1931	7.23000
1932	8.85000
1933	8.71000
1934	10.3500
1935	8.32000
1936	8.26000
1937	8.67000
1938	8.12000