Year	Number
1998	58.5
2000	90.0497512817383
2002	90.0497512817383
2003	63.1840782165527
2004	59.6153831481934
2005	60.7655487060547
2006	58.8516731262207
2007	57.8947372436523
2008	58.1730766296387
2009	60.6635055541992
2010	60.6635055541992
2011	60.5633811950684
2012	59.1549301147461
2013	59.1549301147461
2014	65.3846130371094
2015	61.4285697937012
2016	58.0952377319336
2017	59.0476188659668
2018	60.476188659668
2019	60
2020	57.6190490722656
2021	56.1904754638672
2022	56.1320762634277