Year	Number
1996	7.44680833816528
1998	7.97872352600098
2000	20.6349201202393
2002	16.4021167755127
2003	11.557788848877
2004	19.4174766540527
2005	25.2427177429199
2006	17.8743953704834
2007	24.6376819610596
2008	16.8269233703613
2009	17.5355453491211
2010	24.1706161499023
2011	27.014217376709
2012	24.1706161499023
2013	31.2796211242676
2014	34.761905670166
2015	29.5238094329834
2016	33.8095245361328
2017	31.4285717010498
2018	30.1886787414551
2019	27.3584899902344
2020	32.5471687316895
2021	30.1886787414551
2022	28.7735843658447