Year	Number of
1990	1756.06
1991	1834.14
1992	1896.16
1993	1962.31
1994	2030.49
1995	2105.85
1996	2182
1997	2214.12
1998	2297.62
1999	2363.47
2000	2476.01
2001	2594.13
2002	2693.32
2003	2782.94
2004	2892.1
2005	3010.42
2006	3166.72
2007	3357.19
2008	3548.69
2009	3756.17
2010	3979.95
2011	4119.83
2012	4288.24
2013	4462.89
2014	4612.5
2015	4751.91
2016	4996.32