Year	Number
1996	16.3043479919434
1998	14.6739130020142
2000	16.3043479919434
2002	40
2003	30.2702693939209
2004	31.343282699585
2005	25.4901962280273
2006	22.5490188598633
2007	22.3300971984863
2008	17.9611644744873
2009	16.7464122772217
2010	13.8755979537964
2011	13.2701425552368
2012	19.4312801361084
2013	17.5355453491211
2014	10.0961542129517
2015	10
2016	12.380952835083
2017	10.4761905670166
2018	9.5238094329834
2019	10
2020	10.4761905670166
2021	7.14285707473755
2022	7.07547187805176