Year	Number
1996	35
1998	32.3383102416992
2000	28.3582096099854
2002	15.9203977584839
2003	11.9402980804443
2004	8.17307662963867
2005	8.17307662963867
2006	17.7884616851807
2007	25
2008	28.365385055542
2009	29.8578205108643
2010	29.8578205108643
2011	28.6384983062744
2012	24.8826293945313
2013	26.7605628967285
2014	28.5714282989502
2015	28.0788173675537
2016	32.019702911377
2017	33.9901466369629
2018	34.9514579772949
2019	34.2995185852051
2020	36.7149772644043
2021	36.2318840026855
2022	38.164249420166