Year	Number
1996	224.92
1997	258.62
1998	300.8
1999	311
2000	381.8
2001	447.43
2002	488.66
2003	624.4
2004	844.82
2005	889.58
2006	1269.15
2007	1385.81
2008	1730.93
2009	2086.28
2010	2073.64
2011	2394.55
2012	2976.28
2013	3369.99
2014	3521.08
2015	4019.83
2016	4458.62
2017	5120.48
2018	5216.34
2019	6058.88
2020	5689.02