Year	Number
1996	37.5
1998	34.825870513916
2000	35.8208961486816
2002	48.756217956543
2003	48.756217956543
2004	46.6346168518066
2005	49.519229888916
2006	50
2007	47.1153831481934
2008	47.1153831481934
2009	43.1279602050781
2010	48.8151664733887
2011	48.3568077087402
2012	27.2300472259521
2013	32.3943672180176
2014	34.9753684997559
2015	33.0049247741699
2016	34.4827575683594
2017	33.9901466369629
2018	30.5825233459473
2019	28.9855079650879
2020	21.7391300201416
2021	21.2560386657715
2022	18.8405799865723