Year	million passenger-km
1995	1797
1996	1826
1997	1360
1998	1163
1999	1069
2000	1142
2001	981
2002	954.868
2003	964
2004	950
2005	929
2006	821
2007	757.531
2008	937.081
2009	1141
2010	1045
2011	1040
2012	1141
2014	1186
2015	1269
2016	1337
2017	1550
2018	1602
2019	1454
2020	348