Year	Number
1996	42.2110557556152
1998	38.5
2000	46.766170501709
2002	43.2835807800293
2003	43.2835807800293
2004	45.6730766296387
2005	45.4545440673828
2006	33.0143547058105
2007	31.1004791259766
2008	33.6538467407227
2009	32.2274894714355
2010	31.7535552978516
2011	31.4553985595703
2012	30.046947479248
2013	28.1690139770508
2014	26.9230766296387
2015	23.3333339691162
2016	21.9047622680664
2017	21.9047622680664
2018	22.8571434020996
2019	21.9047622680664
2020	19.0476188659668
2021	14.7619047164917
2022	13.6792449951172