Year	Number of
1990	1139.14
1991	1155.92
1992	1188.2
1993	1240.8
1994	1283.89
1995	1341.37
1996	1388.7
1997	1422.9
1998	1441.75
1999	1450.43
2000	1489.45
2001	1530.51
2002	1566.48
2003	1611.61
2004	1624.87
2005	1693.95
2006	1740.53
2007	1788.18
2008	1872.61
2009	1949.43
2010	2002.37
2011	1988.17
2012	2039.5
2013	2098.07
2014	2132.75
2015	2125.49
2016	2097.3