Year	Number
1999	184679
2000	179944
2001	182546
2002	186007
2003	176944
2004	183872
2005	199145
2006	206623
2007	206495
2008	207272
2009	235472
2010	251921
2011	260304
2012	276784
2013	290063
2014	283537
2015	253131
2016	282085
2017	282133