Year	Number of
1990	1976.72
1991	2023.93
1992	2076.04
1993	2130.91
1994	2187.87
1995	2252.15
1996	2311.59
1997	2376.51
1998	2447.31
1999	2525.56
2000	2610.03
2001	2639.76
2002	2670.94
2003	2705.16
2004	2743.82
2005	2788.36
2006	2803.96
2007	2819.62
2008	2838.44
2009	2858.37
2010	2880.41
2011	2922.22
2012	2962.98
2013	3002.99
2014	3045.33
2015	3090.6
2016	3136.59