Year	million ton-km
1995	2521.5
1996	2541
1997	2583
1998	2857
1999	3515
2000	4078
2002	3894
2003	3263.5
2004	3970.5
2006	6804.25
2007	4405
2008	6856.5
2010	7166
2011	7087
2014	9724
2015	9768
2016	9767
2017	10812.5