Year	Number
1996	21.1956520080566
1998	20.1086959838867
2000	17.3913040161133
2002	17.8378372192383
2003	17.2972965240479
2004	26.3681583404541
2005	15.6862745285034
2006	16.1764698028564
2007	10.1941747665405
2008	14.5631065368652
2009	46.4114837646484
2010	56.9377975463867
2011	56.8720397949219
2012	54.502368927002
2013	55.4502372741699
2014	60.5769233703613
2015	55.238094329834
2016	54.761905670166
2017	53.8095245361328
2018	53.8095245361328
2019	54.761905670166
2020	55.238094329834
2021	50.9523811340332
2022	51.4150924682617