Year	Number
1996	56.9148941040039
1998	67.5531921386719
2000	50.7936515808105
2002	64.0211639404297
2003	62.3115577697754
2004	49.029125213623
2005	61.1650466918945
2006	54.5893707275391
2007	67.1497573852539
2008	69.2307662963867
2009	63.5071105957031
2010	67.2985763549805
2011	63.9810409545898
2012	69.6682434082031
2013	67.7725143432617
2014	69.523811340332
2015	61.4285697937012
2016	58.5714302062988
2017	64.7619018554688
2018	58.9622650146484
2019	57.5471687316895
2020	55.1886787414551
2021	53.7735862731934
2022	49.5283012390137