Year	Number
1996	44.0217399597168
1998	43.4782600402832
2000	40.7608680725098
2002	25.4054050445557
2003	27.027027130127
2004	23.3830852508545
2005	23.0392150878906
2006	20.0980396270752
2007	18.4466018676758
2008	18.9320392608643
2009	22.0095691680908
2010	22.4880390167236
2011	25.1184825897217
2012	25.1184825897217
2013	25.1184825897217
2014	25.480770111084
2015	29.0476188659668
2016	28.5714282989502
2017	29.5238094329834
2018	31.9047622680664
2019	31.9047622680664
2020	30.9523811340332
2021	26.1904754638672
2022	21.698112487793