Year	Number
1996	49.4623641967773
1998	49.7326202392578
2000	50
2002	46.0317459106445
2003	40.2116394042969
2004	34.9753684997559
2005	23.4146347045898
2006	27.8048782348633
2007	33.4951438903809
2008	31.0679607391357
2009	28.7081336975098
2010	38.0952377319336
2011	33.6492881774902
2012	27.014217376709
2013	28.4360198974609
2014	27.4038467407227
2015	32.3809509277344
2016	31.9047622680664
2017	42.8571434020996
2018	43.8095245361328
2019	47.1428565979004
2020	47.1428565979004
2021	48.0952377319336
2022	43.8679237365723