Year	Number
1996	170.12
1997	161.04
1998	154.66
1999	186.89
2000	165.79
2001	171.82
2002	201.74
2003	209.77
2004	211.33
2005	222.58
2006	276.32
2007	330.68
2008	360.85
2009	397.45
2010	444.15
2011	489.87
2012	645.05
2013	766.52
2014	983.31
2015	1017.58
2016	1161.1
2017	1624.68
2018	2055.59
2019	2586.84
2020	3967.54