Year	Number
1996	38.2513656616211
1998	32.2404365539551
2000	46.4480857849121
2002	45.4054069519043
2003	48.6486473083496
2004	44.2786064147949
2005	39.705883026123
2006	29.2682933807373
2007	30.0970878601074
2008	38.3495140075684
2009	39.2344512939453
2010	40.1913871765137
2011	39.3364944458008
2012	38.3886260986328
2013	39.3364944458008
2014	33.1730766296387
2015	31.9047622680664
2016	32.3809509277344
2017	28.5714282989502
2018	18.0952377319336
2019	31.9047622680664
2020	17.1428565979004
2021	17.619047164917
2022	14.1509437561035