Year	Number
1996	28.7234039306641
1998	36.1702117919922
2000	34.3915328979492
2002	41.798942565918
2003	32.1608047485352
2004	31.5533981323242
2005	27.1844654083252
2006	29.468599319458
2007	28.019323348999
2008	27.884614944458
2009	32.7014236450195
2010	27.014217376709
2011	32.2274894714355
2012	27.488151550293
2013	28.4360198974609
2014	40.9523811340332
2015	49.0476188659668
2016	48.5714302062988
2017	47.6190490722656
2018	41.9811325073242
2019	43.8679237365723
2020	41.9811325073242
2021	45.2830200195313
2022	42.9245300292969