Year	Number
1996	36.1702117919922
1998	23.4042549133301
2000	24.3386249542236
2002	23.280424118042
2003	24.1206035614014
2004	22.3300971984863
2005	24.2718448638916
2006	17.3913040161133
2007	17.8743953704834
2008	16.3461532592773
2009	8.05687236785889
2010	6.16113758087158
2011	7.5829381942749
2012	9.95260620117188
2013	11.3744077682495
2014	17.1428565979004
2015	17.619047164917
2016	17.619047164917
2017	14.7619047164917
2018	9.90566062927246
2019	5.66037750244141
2020	6.60377359390259
2021	8.01886749267578
2022	8.49056625366211