Year	Number of
1990	1017.08
1991	1057.16
1992	1097.85
1993	1140.85
1994	1186.56
1995	1235.88
1996	1288.54
1997	1345.13
1998	1405.82
1999	1467.3
2000	1529.28
2001	1583.79
2002	1634.92
2003	1686.26
2004	1740.9
2005	1800.94
2006	1860.18
2007	1924.27
2008	1995.1
2009	2068.11
2010	2144.37
2011	2231.82
2012	2328.29
2013	2433.82
2014	2555.59
2015	2696.13
2016	2853.24