Year	Number
1996	72.92
1997	79.67
1998	67.98
1999	60.65
2000	91.98
2001	89.11
2002	103.31
2003	120.69
2004	91.74
2005	140.51
2006	247.95
2007	240.83
2008	305.79
2009	359.45
2010	529.94
2011	592.74
2012	820
2013	816.34
2014	819.79
2015	850.83
2016	1206.86
2017	1926.61
2018	3368.59
2019	6776.4
2020	9814.39