Year	Billions Of Metric Ton-Kilometers
1847	1.81000
1848	1.22000
1849	1.50000
1850	1.67000
1851	1.72000
1852	1.76000
1853	2.00000
1854	1.97000
1855	2.04000
1856	2.07000
1857	1.96000
1858	1.65000
1859	1.78000
1860	1.90000
1861	1.94000
1862	2.09000
1863	2.13000
1864	2.08000
1865	2.06000
1866	2.22000
1867	2.02000
1868	2.17000
1869	2.00000
1870	1.45000
1871	1.56000
1872	1.84000
1873	1.85000
1874	1.80000
1875	1.96000
1876	1.95000
1877	2.03000
1878	2.00000
1879	2.02000
1880	2.01000
1881	2.17000
1882	2.26000
1883	2.38000
1884	2.45000
1885	2.45000
1886	2.80000
1887	3.07000
1888	3.18000
1889	3.24000
1890	3.22000
1891	3.54000
1892	3.61000
1893	3.60000
1894	3.91000
1895	3.77000
1896	4.19000
1897	4.36000
1898	4.58000
1899	4.49000
1900	4.68000
1901	4.38000
1902	4.46000
1903	4.96000
1904	4.97000
1905	5.08000
1906	5.10000
1907	5.37000
1908	5.32000
1909	5.47000
1910	5.20000
1911	5.77000
1912	5.85000
1913	6.18000
1915	2.17000
1916	2.73000
1917	2.83000
1918	3.27000
1919	2.68000
1920	3.17000
1921	2.80000
1922	4.69000
1923	5.00000
1924	5.23000
1925	5.28000
1926	5.72000
1927	5.95000
1928	6.98000
1929	6.81000
1930	7.27000
1931	7.38000
1932	7.59000
1933	7.80000
1934	8.38000
1935	8.08000
1936	8.09000
1937	7.88000