Year	Number
1996	5.97826099395752
1998	7.60869550704956
2000	10.3260869979858
2002	4.86486482620239
2003	3.24324321746826
2004	4.97512435913086
2005	16.1764698028564
2006	9.80392169952393
2007	11.6504850387573
2008	16.5048542022705
2009	15.3110046386719
2010	18.1818180084229
2011	19.9052124023438
2012	17.0616111755371
2013	17.5355453491211
2014	11.5384616851807
2015	10.9523811340332
2016	9.5238094329834
2017	10.4761905670166
2018	9.5238094329834
2019	9.0476188659668
2020	8.09523773193359
2021	9.0476188659668
2022	5.18867921829224