Year	million passenger-km
1995	1332
1996	1332.5
1997	1304
1998	1368
1999	1102.5
2000	1220
2001	1072
2002	1073
2003	1039
2004	1228
2005	1549
2006	1140.25
2007	1487
2008	1446.5
2009	1024
2010	1377
2011	1399
2012	1485
2013	1592
2014	1246.25
2015	1246
2016	1095.5
2017	1164
2018	1695
2019	1112
2020	580