Year	million ton-km
1993	2.2999999523
1994	2.2999999523
1995	2.2999999523
1996	2.0999999046
1997	2.0999999046
1998	3.2999999523
1999	6.9000000954
2000	11.944
2001	12.918
2002	12.918
2003	13.556
2004	9.563
2005	10.088
2006	10.461
2007	11.027999999999999
2008	10.513000000000002
2009	9.234
2010	6.19
2011	3.1219583241899
2012	2.77921377335453
2013	0
2014	4.17014507594203
2015	4.81185528988917
2016	5.953543762
2017	19.484
2018	16.916
2019	16.55784
2020	4.34740656
2021	0.684174704