Year	Number
1996	30.4347820281982
1998	32.0652160644531
2000	33.6956520080566
2002	41.6216201782227
2003	35.6756744384766
2004	47.7611923217773
2005	41.1764717102051
2006	50.4901962280273
2007	53.8834953308105
2008	56.7961158752441
2009	59.8086128234863
2010	58.3732070922852
2011	60.6635055541992
2012	58.7677726745605
2013	61.1374397277832
2014	62.980770111084
2015	59.523811340332
2016	60.9523811340332
2017	61.9047622680664
2018	62.8571434020996
2019	61.9047622680664
2020	58.5714302062988
2021	58.5714302062988
2022	57.5471687316895