Year	Number
1996	22.8723411560059
1998	23.9361705780029
2000	24.8677253723145
2002	28.0423278808594
2003	34.6733665466309
2004	43.6893196105957
2005	40.7766990661621
2006	40.0966186523438
2007	39.613525390625
2008	35.5769233703613
2009	31.7535552978516
2010	40.7582931518555
2011	50.2369651794434
2012	51.6587677001953
2013	38.8625602722168
2014	60.9523811340332
2015	60.9523811340332
2016	57.1428565979004
2017	50.9523811340332
2018	41.5094337463379
2019	37.2641525268555
2020	48.113208770752
2021	50.4716987609863
2022	51.4150924682617