Year	Number
1996	426.08
1997	471.62
1998	537.7
1999	574.27
2000	598.97
2001	638.61
2002	998.87
2003	961.95
2004	1263.89
2005	1517.3
2006	1762.55
2007	1685.79
2008	2487.45
2009	2278.05
2010	2334.4
2011	2432.7
2012	2253.21
2013	2234.77
2014	2451.02
2015	2432.61
2016	2280.75
2017	2353.67
2018	2299.87
2019	2443.94
2020	2738.88