Year	Number
1996	21.1956520080566
1998	18.4782600402832
2000	21.7391300201416
2002	33.5135116577148
2003	35.6756744384766
2004	44.2786064147949
2005	34.3137245178223
2006	37.7450981140137
2007	44.6601943969727
2008	48.5436897277832
2009	49.7607650756836
2010	51.6746406555176
2011	50.7108993530273
2012	51.6587677001953
2013	49.7630348205566
2014	54.3269233703613
2015	52.8571434020996
2016	54.2857131958008
2017	57.1428565979004
2018	60.9523811340332
2019	58.5714302062988
2020	54.761905670166
2021	52.8571434020996
2022	53.301887512207