Year	million ton-km
1993	45.4000007509
1994	66.0000013709
1995	94.7999985218
1996	83.30000150209999
1997	29.200000263800003
1998	23.5999999791
1999	89.0999983102
2000	96.152
2001	89.642
2002	72.97300000000001
2003	71.97100000000002
2004	79.50500000000001
2005	96.825
2006	100.705
2007	106.723
2008	100.993
2009	72.74099999999999
2010	86.1507569742134
2011	97.60757039343552
2012	104.31310349061107
2013	81.61638
2014	91.027332
2015	96.8426294220511
2016	101.49782909499999
2017	116.16731658100001
2018	122.814762754
2019	112.93278973558387