Year	Number of
1990	886.32
1991	888.46
1992	883.36
1993	896.47
1994	914.28
1995	905.76
1996	893.91
1997	882.28
1998	875
1999	883.51
2000	878.72
2001	879.09
2002	873.57
2003	881.26
2004	887.83
2005	897.47
2006	907.28
2007	914.13
2008	923.71
2009	934.07
2010	949.28
2011	964.47
2012	978.05
2013	989.26
2014	1002.48
2015	1018.63
2016	1038.17