Year	Number of
1990	791.91
1991	774.03
1992	762.21
1993	750.53
1994	744.76
1995	756.93
1996	768.75
1997	793.69
1998	798.56
1999	883.84
2000	905.29
2001	925.68
2002	932.98
2003	943.03
2004	945.84
2005	939.93
2006	962.12
2007	968.42
2008	982.23
2009	1002.93
2010	1031.93
2011	1062.01
2012	1124.63
2013	1166.47
2014	1197.19
2015	1234.26
2016	1269.75