Year	million passenger-km
1995	87
1996	92
1997	93
1998	59
1999	31
2000	44
2001	50
2002	43
2003	50
2004	45
2006	60.3
2007	59.9
2008	90.2
2009	106.1
2010	98.7
2011	82.8
2012	75.8
2015	41
2016	40.8
2017	43
2018	35
2019	37.1
2020	6.8
2021	21