Year	million ton-km
1995	13300
1996	15100
1997	16900
1998	17340
1999	18050.424536214
2000	18169.862865357
2001	19199.607124964
2002	18633.81459925
2003	18745.175509571
2004	20136.782576286
2005	21426.789011214
2006	21918.784355994
2007	21265.297399239
2008	21076.885656054
2009	19171.477488606
2010	18576.419860376
2011	20973.823473378
2012	21466.803050594
2013	22401.431120115
2014	22143.367020006
2015	19342.444761281
2016	17053.216554029
2017	17166.930314851
2018	17205.693315326
2019	16884.335172455
2020	15212.12270599