Year	million passenger-km
1995	60
1996	146
1997	161
1998	143
1999	146
2000	188
2001	222
2002	160
2003	142
2004	140
2005	140.4
2006	94.1
2007	84.844512
2008	89.075046
2009	34.959846
2010	36.68416
2011	24.649634
2012	22.242204
2013	30
2014	20
2015	16.7
2016	28.397202
2017	22.724
2018	29.514
2019	27.368
2020	5.359
2021	7.24727