Year	Number
1996	68.4782638549805
1998	67.9347839355469
2000	66.8478240966797
2002	65.405403137207
2003	65.405403137207
2004	62.6865653991699
2005	60.7843132019043
2006	65.6862716674805
2007	65.0485458374023
2008	58.2524261474609
2009	58.8516731262207
2010	60.7655487060547
2011	57.8199043273926
2012	59.7156410217285
2013	60.6635055541992
2014	59.1346168518066
2015	55.7142868041992
2016	55.7142868041992
2017	51.4285697937012
2018	41.9047622680664
2019	42.8571434020996
2020	47.1428565979004
2021	62.3809509277344
2022	64.1509399414063