Year	Number
1996	44.0860214233398
1998	48.1283416748047
2000	45.7446823120117
2002	50.2645492553711
2003	51.3227500915527
2004	46.305419921875
2005	41.9512176513672
2006	41.9512176513672
2007	46.1165046691895
2008	49.5145645141602
2009	45.4545440673828
2010	52.3809509277344
2011	55.4502372741699
2012	48.8151664733887
2013	46.445499420166
2014	33.1730766296387
2015	28.0952377319336
2016	30
2017	24.2857151031494
2018	27.1428565979004
2019	30.4761905670166
2020	28.0952377319336
2021	25.238094329834
2022	21.698112487793