Year	Number of
1990	537.31
1991	556.64
1992	576.45
1993	597.33
1994	619.59
1995	643.65
1996	659.24
1997	676.39
1998	696.37
1999	716.77
2000	737.62
2001	761.14
2002	785.66
2003	813.27
2004	842.64
2005	874.3
2006	903.01
2007	933.34
2008	966.62
2009	1003.23
2010	1043.77
2011	1080.81
2012	1122.04
2013	1165.01
2014	1210.36
2015	1257.68
2016	1305.05