Year	Number
1978	167913
1979	152260
1980	153649
1982	94568
1983	87154
1984	82985
1986	89798
1991	119955
1993	113714
2000	152859
2003	128775
2004	112491
2005	160923
2006	100154
2007	167815
2008	124989
2009	140002
2010	139588
2011	131055
2012	172566
2013	208319
2014	209245
2015	223848
2016	201619