Year	million ton-km
1995	25101
1996	24968
1997	24617
1998	22920
1999	22541
2000	22136
2001	22193
2002	22131
2003	22794
2004	22476
2005	22813
2006	23192
2007	23334
2008	22256
2009	20562
2010	20398
2011	19998
2012	20471
2013	21071
2014	21029
2015	21519
2016	21265
2017	21663
2018	19369
2019	19993
2020	18340