Year	Number
1996	31.3829784393311
1998	20.7446804046631
2000	18.518518447876
2002	15.3439149856567
2003	25.6281414031982
2004	26.6990299224854
2005	26.2135925292969
2006	23.1884059906006
2007	23.1884059906006
2008	21.1538467407227
2009	19.4312801361084
2010	21.3270149230957
2011	25.1184825897217
2012	19.9052124023438
2013	22.748815536499
2014	42.3809509277344
2015	48.5714302062988
2016	50.9523811340332
2017	46.1904754638672
2018	44.3396224975586
2019	46.2264137268066
2020	48.113208770752
2021	47.1698112487793
2022	48.113208770752