Year	Number
1996	64.361701965332
1998	67.0212783813477
2000	53.9682540893555
2002	62.4338607788086
2003	63.3165817260742
2004	60.1941757202148
2005	49.029125213623
2006	48.7922706604004
2007	49.7584533691406
2008	50.961540222168
2009	45.497631072998
2010	49.2891006469727
2011	51.6587677001953
2012	52.1327018737793
2013	53.554500579834
2014	48.0952377319336
2015	49.0476188659668
2016	48.5714302062988
2017	48.0952377319336
2018	46.2264137268066
2019	50.4716987609863
2020	63.6792449951172
2021	55.1886787414551
2022	59.4339637756348