Year	Number
1996	83.6956558227539
1998	90.760871887207
2000	81.5217361450195
2002	76.2162170410156
2003	68.1081085205078
2004	68.1592025756836
2005	62.7450981140137
2006	70.0980377197266
2007	72.3300933837891
2008	81.0679626464844
2009	73.2057418823242
2010	75.1196136474609
2011	75.8293838500977
2012	74.8815155029297
2013	73.9336471557617
2014	76.4423065185547
2015	75.2380981445313
2016	75.7142868041992
2017	75.7142868041992
2018	75.2380981445313
2019	73.8095245361328
2020	72.8571395874023
2021	70.476188659668
2022	67.9245300292969