Year	Number of
1990	1284.14
1991	1325.46
1992	1368.01
1993	1416.89
1994	1466.99
1995	1522.76
1996	1572.17
1997	1615.66
1998	1654.31
1999	1699.15
2000	1742.34
2001	1792.33
2002	1845.82
2003	1905.33
2004	1969.88
2005	2043.83
2006	2109.17
2007	2173.2
2008	2241.74
2009	2314.44
2010	2397.32
2011	2464.2
2012	2537.92
2013	2618.41
2014	2701.36
2015	2785.84
2016	2863.19