Year	Number of
1990	675.61
1991	688.32
1992	705.95
1993	724.03
1994	751.64
1995	776.83
1996	793.38
1997	834.52
1998	870.5
1999	895.09
2000	927.83
2001	932.78
2002	943.6
2003	949.23
2004	963.02
2005	985.54
2006	990.99
2007	1002.45
2008	1011.52
2009	1023.19
2010	1049.02
2011	1069.85
2012	1088.49
2013	1109.69
2014	1125.67
2015	1143.32
2016	1161.71