Year	Number
1996	41.4893608093262
1998	63.2978706359863
2000	61.375659942627
2002	46.0317459106445
2003	40.7035179138184
2004	43.2038841247559
2005	33.009708404541
2006	31.4009666442871
2007	34.2995185852051
2008	38.461540222168
2009	32.7014236450195
2010	33.1753540039063
2011	36.0189590454102
2012	39.3364944458008
2013	41.7061614990234
2014	45.7142868041992
2015	43.3333320617676
2016	40.476188659668
2017	32.8571434020996
2018	36.3207550048828
2019	33.0188674926758
2020	35.8490562438965
2021	39.1509437561035
2022	38.6792449951172