Year	million passenger-km
1995	197
1996	168
1997	95
1998	116
1999	121
2000	125
2001	138
2002	123
2003	105
2004	89
2005	73
2006	80
2007	51
2008	41
2009	32
2010	19
2011	18
2012	16
2013	12
2014	7.714
2015	6.99
2016	3.2
2017	2.4
2018	2.7
2019	2
2020	0.593
2021	0.812