Year	Number
1996	7.88
1997	8.4
1998	9.42
1999	2.4
2000	3.19
2001	4.14
2002	3.73
2003	7.16
2004	8.63
2005	6.78
2006	19.01
2007	20.51
2008	29.22
2009	33.95
2010	44.95
2011	47.07
2012	54.42
2013	88.02
2014	95.71
2015	102.74
2016	126.28
2017	125.95
2018	172.24
2019	189.37
2020	263.99