Year	Number
1996	46.2311553955078
1998	37.5
2000	37.3134346008301
2002	34.3283576965332
2003	34.3283576965332
2004	39.9038467407227
2005	34.9282302856445
2006	40.6698570251465
2007	40.6698570251465
2008	39.4230766296387
2009	43.1279602050781
2010	41.2322273254395
2011	43.1924896240234
2012	44.1314544677734
2013	46.0093879699707
2014	57.6923065185547
2015	50.9523811340332
2016	51.9047622680664
2017	51.4285697937012
2018	51.4285697937012
2019	50.476188659668
2020	50
2021	52.3809509277344
2022	54.7169799804688