Year	million ton-km
1970	9112.5002355577
1971	9919.199868083002
1972	11421.7999193666
1973	13324.600089788299
1974	14278.6999087336
1975	14237.700144290902
1976	15783.200346946802
1977	17385.500090793004
1978	19200.0997773408
1979	20813.699676871598
1980	21535.9003806115
1981	22497.700273335096
1982	22815.299735643202
1983	25668.7999413981
1984	29148.099589742702
1985	29381.2001672761
1986	32332.500023461893
1987	36295.8000880257
1988	40585.299983129
1989	43977.200284585495
1990	45332.2003055662
1991	45260.3001590818
1992	48812.2996478826
1993	53480.700138643704
1994	61149.4004474433
1995	66038.4001929315
1996	71720.09998531651
1997	83175.40106196709
1998	82220.2744102798
1999	87738.51830205649
2000	95007.53899999999
2001	88178.099
2002	93048.16000000002
2003	97554.03899999999
2004	107678.112
2005	108709.78899999998
2006	113965.88899999997
2007	118619.00099999996
2008	114507.80500000001
2009	127974.74665439597
2010	118967.78870858357
2011	118501.9949028371
2012	115666.12044118953
2013	112078.8098749745
2014	115940.75457600782
2015	115714.64786194848
2016	118019.94625847535
2017	126972.71836334295
2018	129850.79639120116
2019	126077.98509277723
2020	108164.31934182832
2021	129344.8082739595