Year	Number
1996	27.659574508667
1998	13.297872543335
2000	8.99470901489258
2002	17.4603176116943
2003	6.03015089035034
2004	8.25242710113525
2005	16.990291595459
2006	17.3913040161133
2007	20.2898559570313
2008	24.0384616851807
2009	32.2274894714355
2010	29.8578205108643
2011	34.1232223510742
2012	37.9146919250488
2013	40.7582931518555
2014	41.9047622680664
2015	35.238094329834
2016	45.238094329834
2017	39.523811340332
2018	38.6792449951172
2019	42.4528312683105
2020	44.3396224975586
2021	41.5094337463379
2022	43.3962249755859