Year	Number
1996	42.21
1997	30.84
1998	29.89
1999	29.73
2000	24.13
2001	23.84
2002	23.92
2003	26.71
2004	28.55
2005	45.75
2006	36.47
2007	32.06
2008	36.57
2009	55.78
2010	52
2011	44.8
2012	66.74
2013	73.08
2014	63.89
2015	84.89
2016	88.15
2017	102.51
2018	101.39
2019	95.73
2020	125.69