Year	Number
1996	43.4782600402832
1998	38.0434799194336
2000	45.1086959838867
2002	37.2972984313965
2003	32.972972869873
2004	28.8557205200195
2005	26.9607849121094
2006	25.4901962280273
2007	23.3009700775146
2008	27.6699028015137
2009	27.7511959075928
2010	28.7081336975098
2011	28.9099521636963
2012	31.7535552978516
2013	38.3886260986328
2014	35.0961532592773
2015	35.238094329834
2016	34.761905670166
2017	36.6666679382324
2018	30.4761905670166
2019	30.4761905670166
2020	29.0476188659668
2021	24.761905670166
2022	29.2452831268311