Year	Number
1996	60.6557388305664
1998	56.8306007385254
2000	63.3879776000977
2002	64.3243255615234
2003	63.7837829589844
2004	62.6865653991699
2005	65.6862716674805
2006	67.3170700073242
2007	72.8155364990234
2008	72.8155364990234
2009	70.8134002685547
2010	71.7703323364258
2011	72.9857788085938
2012	73.459716796875
2013	71.5639801025391
2014	74.038459777832
2015	71.4285736083984
2016	65.7142868041992
2017	64.7619018554688
2018	64.7619018554688
2019	64.7619018554688
2020	60.9523811340332
2021	61.4285697937012
2022	60.3773574829102