Year	Number
1996	39.1959800720215
1998	50.5
2000	50.7462692260742
2002	57.7114410400391
2003	60.1990051269531
2004	61.0576934814453
2005	58.3732070922852
2006	55.0239219665527
2007	57.8947372436523
2008	58.1730766296387
2009	60.1895751953125
2010	60.6635055541992
2011	57.2769966125488
2012	54.9295768737793
2013	55.3990592956543
2014	61.538459777832
2015	59.0476188659668
2016	57.1428565979004
2017	57.1428565979004
2018	56.1904754638672
2019	57.6190490722656
2020	55.7142868041992
2021	55.7142868041992
2022	56.1320762634277