Year	Number
1996	43.2160797119141
1998	42.5
2000	37.3134346008301
2002	42.7860679626465
2003	44.7761192321777
2004	42.788459777832
2005	43.0622024536133
2006	46.4114837646484
2007	48.3253593444824
2008	49.519229888916
2009	47.8672981262207
2010	51.1848335266113
2011	49.2957763671875
2012	52.1126747131348
2013	52.1126747131348
2014	50
2015	49.523811340332
2016	53.8095245361328
2017	46.1904754638672
2018	50
2019	50
2020	52.3809509277344
2021	51.9047622680664
2022	53.7735862731934