Year	Number
1996	76.3440856933594
1998	74.3315505981445
2000	75
2002	74.6031723022461
2003	73.0158767700195
2004	70.4433517456055
2005	64.3902435302734
2006	59.5121955871582
2007	59.7087364196777
2008	61.6504859924316
2009	70.8134002685547
2010	69.0476226806641
2011	58.7677726745605
2012	69.1943130493164
2013	69.6682434082031
2014	61.0576934814453
2015	60
2016	59.523811340332
2017	56.1904754638672
2018	59.523811340332
2019	58.5714302062988
2020	58.5714302062988
2021	57.6190490722656
2022	59.9056587219238