Year	Number
1996	81.1827926635742
1998	81.2834243774414
2000	82.9787216186523
2002	75.661376953125
2003	69.3121719360352
2004	60.5911331176758
2005	57.073169708252
2006	55.6097564697266
2007	54.3689308166504
2008	56.3106803894043
2009	53.1100463867188
2010	51.9047622680664
2011	45.971565246582
2012	39.8104248046875
2013	35.0710906982422
2014	35.5769233703613
2015	14.2857141494751
2016	12.8571424484253
2017	16.1904754638672
2018	13.8095235824585
2019	11.9047622680664
2020	16.1904754638672
2021	18.5714282989502
2022	19.3396224975586