Year	Number
1996	32.2580642700195
1998	28.3422451019287
2000	30.8510646820068
2002	32.8042335510254
2003	33.862434387207
2004	25.1231517791748
2005	17.0731716156006
2006	24.8780479431152
2007	23.3009700775146
2008	20.8737869262695
2009	17.2248802185059
2010	14.2857141494751
2011	11.8483409881592
2012	12.7962083816528
2013	14.2180099487305
2014	15.384614944458
2015	13.3333330154419
2016	14.7619047164917
2017	16.1904754638672
2018	21.9047622680664
2019	24.2857151031494
2020	22.8571434020996
2021	31.4285717010498
2022	34.4339637756348