Year	Number
1996	37.0967750549316
1998	40.1069526672363
2000	36.7021293640137
2002	37.037036895752
2003	35.4497337341309
2004	35.9605903625488
2005	32.1951217651367
2006	39.0243911743164
2007	39.3203887939453
2008	37.8640785217285
2009	28.7081336975098
2010	28.0952377319336
2011	27.488151550293
2012	38.8625602722168
2013	39.8104248046875
2014	34.6153831481934
2015	32.3809509277344
2016	32.3809509277344
2017	26.1904754638672
2018	32.3809509277344
2019	32.8571434020996
2020	30.9523811340332
2021	29.0476188659668
2022	27.3584899902344