Year	Number
1996	24.4680843353271
1998	32.4468078613281
2000	25.3968257904053
2002	38.624340057373
2003	22.1105518341064
2004	24.2718448638916
2005	28.1553401947021
2006	33.3333320617676
2007	31.4009666442871
2008	37.019229888916
2009	47.8672981262207
2010	46.445499420166
2011	46.445499420166
2012	47.3933639526367
2013	40.7582931518555
2014	25.238094329834
2015	30.9523811340332
2016	28.5714282989502
2017	26.1904754638672
2018	25.4716987609863
2019	30.6603775024414
2020	27.3584899902344
2021	34.4339637756348
2022	36.7924537658691