Year	Number
1996	49.5
1998	44.2786064147949
2000	42.7860679626465
2002	24.8756217956543
2003	22.3880596160889
2004	17.3076915740967
2005	14.4230766296387
2006	23.0769233703613
2007	30.769229888916
2008	32.211540222168
2009	33.6492881774902
2010	33.6492881774902
2011	32.3943672180176
2012	28.1690139770508
2013	30.5164318084717
2014	33.0049247741699
2015	32.019702911377
2016	37.9310340881348
2017	39.9014778137207
2018	39.8058242797852
2019	39.613525390625
2020	42.512077331543
2021	42.9951705932617
2022	44.9275360107422