Year	million ton-km
1995	13674
1996	12017
1997	12373
1998	11753
1999	9859
2000	11234
2001	10929
2002	10383
2003	10113
2004	9702
2005	9463
2006	9988
2007	9647
2008	9299
2009	6964
2010	8105
2011	7960
2012	7591
2013	8494
2014	8829
2015	8439
2016	9111
2017	8486
2018	8691
2019	8480
2020	7268
2021	8580