Year	Number
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	0
2006	0
2007	3003.02
2008	3122.95
2009	3712.68
2010	4076.88
2011	4820.99
2012	5903.93
2013	5276.19
2014	5044.17
2015	4894.18
2016	4980.44
2017	4852.28
2018	4744.9
2019	4939.18
2020	4741.34