Year	Number of
1990	877.28
1991	909.68
1992	942.69
1993	976.99
1994	1012.84
1995	1048.86
1996	1092.8
1997	1131.06
1998	1174.02
1999	1215.01
2000	1250.27
2001	1284.57
2002	1312.84
2003	1340.39
2004	1370.09
2005	1400.03
2006	1432.43
2007	1464.57
2008	1496.9
2009	1531.14
2010	1562.72
2011	1594.05
2012	1628.69
2013	1666.74
2014	1711.64
2015	1762.34
2016	1820.39