Year	Number of
1990	1242.42
1991	1302.07
1992	1373.39
1993	1451.58
1994	1524.1
1995	1587.31
1996	1643.44
1997	1720.71
1998	1766.74
1999	1846.5
2000	1911.01
2001	1983.59
2002	2088.15
2003	2164.97
2004	2240.96
2005	2317.21
2006	2388.85
2007	2460.83
2008	2530.91
2009	2598.49
2010	2668.01
2011	2733.28
2012	2805.06
2013	2876.59
2014	2952.17
2015	3029.09
2016	3094.43