Year	Number
1996	3.80434775352478
1998	6.52173900604248
2000	14.6739130020142
2002	21.0810813903809
2003	24.3243236541748
2004	20.3980102539063
2005	25.4901962280273
2006	28.9215679168701
2007	26.2135925292969
2008	35.9223289489746
2009	39.2344512939453
2010	35.8851661682129
2011	41.7061614990234
2012	41.2322273254395
2013	35.0710906982422
2014	31.730770111084
2015	32.8571434020996
2016	28.5714282989502
2017	33.3333320617676
2018	35.238094329834
2019	35.238094329834
2020	41.4285697937012
2021	46.1904754638672
2022	45.7547187805176