Year	Number
1996	46.5
1998	48.756217956543
2000	52.7363166809082
2002	53.7313423156738
2003	48.756217956543
2004	39.9038467407227
2005	30.2884616851807
2006	42.3076934814453
2007	44.711540222168
2008	44.711540222168
2009	43.6018943786621
2010	42.1800956726074
2011	41.3145523071289
2012	41.3145523071289
2013	42.2535209655762
2014	44.3349761962891
2015	45.8128089904785
2016	47.7832527160645
2017	47.290641784668
2018	44.6601943969727
2019	46.8599052429199
2020	44.9275360107422
2021	46.3768119812012
2022	44.9275360107422