Year	Number of
1990	760.53
1991	792.8
1992	824.34
1993	857.22
1994	891.21
1995	928.69
1996	960.45
1997	994.58
1998	1031.28
1999	1072.35
2000	1112.76
2001	1122.91
2002	1137.09
2003	1153.42
2004	1182.16
2005	1228.08
2006	1310.79
2007	1409.66
2008	1513.87
2009	1621.61
2010	1742.13
2011	1792.64
2012	1860.37
2013	1917.43
2014	1972.71
2015	2022.78
2016	2091.66