Year	Number
1996	75.8064498901367
1998	74.3315505981445
2000	76.0638275146484
2002	76.1904754638672
2003	73.5449752807617
2004	71.9211807250977
2005	70.7317047119141
2006	72.1951217651367
2007	73.3009719848633
2008	73.3009719848633
2009	72.2488021850586
2010	72.3809509277344
2011	71.5639801025391
2012	70.1421813964844
2013	67.2985763549805
2014	64.9038467407227
2015	63.8095245361328
2016	64.7619018554688
2017	65.7142868041992
2018	65.2380981445313
2019	62.3809509277344
2020	59.0476188659668
2021	62.8571434020996
2022	62.2641525268555