Year	Number
1996	362.45
1997	406.22
1998	394.84
1999	463.17
2000	535.48
2001	533.64
2002	680.85
2003	709.28
2004	849.59
2005	983.57
2006	1447.51
2007	1566.45
2008	2363.72
2009	2705.07
2010	3167.93
2011	3523.18
2012	4082.94
2013	4502.77
2014	4993.91
2015	5349.4
2016	6179.73
2017	6608.45
2018	7483.06
2019	8423.92
2020	9296.64