Year	Number
1996	56.2841529846191
1998	54.6448097229004
2000	40.4371566772461
2002	37.8378372192383
2003	31.8918914794922
2004	25.8706474304199
2005	12.7450981140137
2006	15.6097564697266
2007	16.019416809082
2008	8.25242710113525
2009	6.69856452941895
2010	8.13397121429443
2011	12.3222751617432
2012	14.2180099487305
2013	14.6919431686401
2014	16.3461532592773
2015	16.6666660308838
2016	14.7619047164917
2017	15.2380952835083
2018	14.2857141494751
2019	13.8095235824585
2020	13.8095235824585
2021	14.2857141494751
2022	16.0377349853516