Year	Number
1996	49.2462310791016
1998	55
2000	55.2238807678223
2002	57.7114410400391
2003	55.7213935852051
2004	57.211540222168
2005	57.4162673950195
2006	55.9808616638184
2007	57.4162673950195
2008	57.6923065185547
2009	59.2417068481445
2010	58.7677726745605
2011	57.2769966125488
2012	57.7464790344238
2013	55.3990592956543
2014	62.019229888916
2015	58.5714302062988
2016	57.1428565979004
2017	57.6190490722656
2018	57.6190490722656
2019	58.0952377319336
2020	54.761905670166
2021	55.7142868041992
2022	55.6603775024414