Year	Number
1996	36.559139251709
1998	35.8288764953613
2000	38.8297882080078
2002	43.3862419128418
2003	40.2116394042969
2004	35.9605903625488
2005	38.5365867614746
2006	40
2007	42.7184448242188
2008	41.262134552002
2009	40.1913871765137
2010	40.476188659668
2011	41.2322273254395
2012	44.5497627258301
2013	48.8151664733887
2014	51.4423065185547
2015	49.523811340332
2016	49.0476188659668
2017	42.8571434020996
2018	44.2857131958008
2019	48.5714302062988
2020	48.0952377319336
2021	48.5714302062988
2022	48.113208770752