Year	Number
1996	28.4946231842041
1998	31.550802230835
2000	31.9148941040039
2002	32.8042335510254
2003	22.2222213745117
2004	11.3300495147705
2005	6.82926845550537
2006	5.85365867614746
2007	6.7961163520813
2008	7.28155326843262
2009	5.74162673950195
2010	9.0476188659668
2011	9.95260620117188
2012	15.6398105621338
2013	18.4834117889404
2014	20.6730766296387
2015	17.1428565979004
2016	14.2857141494751
2017	15.7142858505249
2018	15.2380952835083
2019	12.8571424484253
2020	14.7619047164917
2021	15.2380952835083
2022	19.8113212585449