Year	Number
1996	20.7446804046631
1998	21.8085098266602
2000	30.1587295532227
2002	39.1534385681152
2003	41.2060317993164
2004	39.3203887939453
2005	33.4951438903809
2006	22.2222213745117
2007	23.6714973449707
2008	24.0384616851807
2009	27.014217376709
2010	19.4312801361084
2011	10.4265403747559
2012	7.10900497436523
2013	6.16113758087158
2014	9.0476188659668
2015	9.0476188659668
2016	11.4285717010498
2017	9.0476188659668
2018	11.3207550048828
2019	13.6792449951172
2020	14.6226415634155
2021	17.9245281219482
2022	18.3962268829346