Year	Number
1996	30.4347820281982
1998	47.2826080322266
2000	47.2826080322266
2002	41.0810813903809
2003	52.972972869873
2004	53.233829498291
2005	49.0196075439453
2006	54.4117660522461
2007	52.4271850585938
2008	53.3980598449707
2009	52.1531105041504
2010	51.6746406555176
2011	53.554500579834
2012	51.6587677001953
2013	47.3933639526367
2014	48.0769233703613
2015	45.7142868041992
2016	43.8095245361328
2017	43.3333320617676
2018	41.4285697937012
2019	42.8571434020996
2020	49.523811340332
2021	45.7142868041992
2022	43.8679237365723