Year	Number of
1990	585.95
1991	601.32
1992	617.35
1993	634.22
1994	652.2
1995	672.57
1996	684.57
1997	698.63
1998	714.03
1999	730.43
2000	748.65
2001	756.5
2002	765.85
2003	776.01
2004	786.62
2005	798.83
2006	805.78
2007	813.03
2008	822.96
2009	834.65
2010	849.02
2011	860.62
2012	874.57
2013	889
2014	905.71
2015	924.77
2016	944.73