Year	Number
1996	42.5
1998	40.7960205078125
2000	47.7611923217773
2002	52.2388076782227
2003	47.7611923217773
2004	46.1538467407227
2005	43.75
2006	41.8269233703613
2007	34.6153831481934
2008	34.1346168518066
2009	32.2274894714355
2010	33.1753540039063
2011	34.2723007202148
2012	42.7230033874512
2013	43.6619720458984
2014	49.7536964416504
2015	49.7536964416504
2016	52.2167472839355
2017	49.7536964416504
2018	47.0873794555664
2019	47.8260879516602
2020	47.8260879516602
2021	46.3768119812012
2022	45.4106292724609