Year	Number
1996	38.7096786499023
1998	35.8288764953613
2000	34.5744667053223
2002	55.5555572509766
2003	40.7407417297363
2004	34.9753684997559
2005	37.073169708252
2006	30.7317066192627
2007	27.6699028015137
2008	22.3300971984863
2009	23.4449768066406
2010	20.9523811340332
2011	21.8009471893311
2012	18.0094795227051
2013	16.1137447357178
2014	7.21153831481934
2015	7.61904764175415
2016	9.0476188659668
2017	8.09523773193359
2018	8.5714282989502
2019	7.61904764175415
2020	5.7142858505249
2021	4.7619047164917
2022	4.71698093414307