Year	million ton-km
1973	15568.700122676602
1974	16955.199908264098
1975	17236.200138278902
1976	19300.30037690741
1977	21322.8000910735
1978	23579.89977702519
1979	25626.69970912539
1980	26825.200362629996
1981	28360.500301726195
1982	29046.299785875206
1983	32407.8999070598
1984	36841.99960424769
1985	37061.700174778896
1986	40331.800085954404
1987	45392.70013772729
1988	50418.599994026175
1989	54428.200294874696
1990	56124.9003501084
1991	56142.30008095471
1992	61025.1997384947
1993	67522.60018999167
1994	77183.30033116812
1995	83098.20039783449
1996	89164.59998059997
1997	102876.1012196318
1998	101788.27430563659
1999	108629.6182458732
2000	118257.21100000002
2001	110860.83500009544
2002	117506.673
2003	124203.199
2004	139032.94
2005	141483.603
2006	148937.60400000002
2007	158205.94599999994
2008	158487.87399999998
2009	175509.34365439598
2010	182498.6270779699
2011	183532.2300590226
2012	175567.34224884296
2013	176421.5578135476
2014	185517.10946141917
2015	188363.4163123446
2016	195588.27509403415
2017	213628.64717206234
2018	222156.70077933485
2019	219524.44784500514
2020	182526.18487654746
2021	219227.32846961028