Year	Number of
1990	4840.65
1991	4807.23
1992	4883.55
1993	4957.83
1994	4965.16
1995	5036.76
1996	5024.18
1997	5046.61
1998	5047.22
1999	4993.2
2000	4842.03
2001	4761.6
2002	4735.46
2003	4734.22
2004	4642.45
2005	4675.09
2006	4587.02
2007	4515.48
2008	4584.71
2009	4725.55
2010	4618.27
2011	4553.46
2012	4589.28
2013	4737.21
2014	4830.66
2015	4781.47
2016	4897.99