Year	Number of
1990	1616.33
1991	1647.65
1992	1714.72
1993	1786.15
1994	1887.83
1995	1999.16
1996	2091.42
1997	2138.28
1998	2141.5
1999	2062.98
2000	2066.82
2001	2133.39
2002	2185.85
2003	2230.99
2004	2224.93
2005	2307.21
2006	2335.08
2007	2364.79
2008	2455.08
2009	2526.12
2010	2519.81
2011	2450.49
2012	2514.1
2013	2583.43
2014	2624.17
2015	2586.75
2016	2551.54