Year	Number of
1990	1074.25
1991	1126.9
1992	1175.1
1993	1228.49
1994	1273.57
1995	1281.15
1996	1254.53
1997	1257.77
1998	1332.37
1999	1385.29
2000	1486.59
2001	1553.12
2002	1596.28
2003	1717.72
2004	1710.52
2005	1744.6
2006	1874.39
2007	1995.08
2008	2087.77
2009	2155.06
2010	2126.85
2011	2213.4
2012	2367.57
2013	2408.69
2014	2513.6
2015	2622.45
2016	2727.78