Year	Number of
1990	1814.06
1991	1871.03
1992	1937.38
1993	2004.34
1994	2073.36
1995	2140.12
1996	2216.49
1997	2285.38
1998	2353.59
1999	2418.3
2000	2484.16
2001	2544.34
2002	2609
2003	2689.76
2004	2774.39
2005	2862.38
2006	2936.17
2007	3017.04
2008	3106.69
2009	3204.33
2010	3309.53
2011	3327.55
2012	3346.08
2013	3361.33
2014	3384.73
2015	3418.1
2016	3448.82