Year	Number of
1990	710.78
1991	777.3
1992	935.97
1993	1028.14
1994	1099.89
1995	1169.68
1996	1256.51
1997	1342.77
1998	1434.45
1999	1581.75
2000	1660.7
2001	1738.09
2002	1792.09
2003	1833.47
2004	1801.72
2005	1851.06
2006	2023.2
2007	2140.94
2008	2243.56
2009	2342.67
2010	2432.06
2011	2487.93
2012	2506.14
2013	2492.15
2014	2489.75
2015	2484.29
2016	2482.25