Year	million passenger-km
1995	267
1996	294
1997	346
1998	383
1999	529
2000	781.5
2001	960.7
2002	1116
2003	1278.3
2004	1422.9
2005	1617.8
2006	1609
2007	1834.1
2008	1968.5
2009	2011.5
2010	1986.3
2011	1926.9
2012	2133.4
2013	2376.2
2014	2485.2
2015	2608.1
2016	2644.7
2017	2765.2
2018	3031.76
2019	3579.9
2020	1252.9
2021	1956