Year	Number
1996	5.97826099395752
1998	8.69565200805664
2000	14.6739130020142
2002	25.4054050445557
2003	25.4054050445557
2004	24.3781089782715
2005	30.8823528289795
2006	32.8431358337402
2007	30.5825233459473
2008	28.6407775878906
2009	23.4449768066406
2010	21.5311012268066
2011	23.222749710083
2012	21.8009471893311
2013	19.4312801361084
2014	16.3461532592773
2015	12.380952835083
2016	12.8571424484253
2017	13.3333330154419
2018	11.9047622680664
2019	11.9047622680664
2020	10.9523811340332
2021	12.380952835083
2022	13.6792449951172