Year	Number
1996	6.45161294937134
1998	27.2727279663086
2000	25
2002	4.23280429840088
2003	7.40740728378296
2004	12.8078813552856
2005	16.0975608825684
2006	28.7804870605469
2007	29.1262130737305
2008	22.8155345916748
2009	20.0956935882568
2010	24.761905670166
2011	22.274881362915
2012	17.5355453491211
2013	21.8009471893311
2014	21.1538467407227
2015	17.1428565979004
2016	13.3333330154419
2017	16.1904754638672
2018	17.619047164917
2019	16.1904754638672
2020	14.2857141494751
2021	12.8571424484253
2022	12.7358493804932