Year	Number of
1990	11909.01
1991	11901.65
1992	11761.51
1993	11763.3
1994	11622.25
1995	11550.03
1996	11498.16
1997	11306.53
1998	11266.58
1999	11063.73
2000	10947.68
2001	10775.76
2002	10684.33
2003	10747.05
2004	10380.52
2005	10454.7
2006	10526.16
2007	10637.17
2008	10777.71
2009	11003.93
2010	11085.73
2011	11214.77
2012	11279.16
2013	11234.9
2014	11493.18
2015	11780.94
2016	12098.97