Year	Number
1996	50.5319137573242
1998	48.9361686706543
2000	54.4973526000977
2002	40.2116394042969
2003	33.165828704834
2004	33.009708404541
2005	36.8932037353516
2006	34.2995185852051
2007	36.2318840026855
2008	34.1346168518066
2009	31.7535552978516
2010	30.8056869506836
2011	44.5497627258301
2012	50.2369651794434
2013	54.502368927002
2014	46.6666679382324
2015	50.9523811340332
2016	57.1428565979004
2017	58.5714302062988
2018	61.3207550048828
2019	59.4339637756348
2020	55.6603775024414
2021	52.8301887512207
2022	57.5471687316895