Year	Number
1996	44.7236175537109
1998	41.5
2000	38.3084564208984
2002	36.8159217834473
2003	34.3283576965332
2004	33.6538467407227
2005	31.5789470672607
2006	34.9282302856445
2007	40.6698570251465
2008	34.6153831481934
2009	35.5450248718262
2010	38.3886260986328
2011	37.5586853027344
2012	40.3755874633789
2013	38.0281677246094
2014	31.730770111084
2015	33.8095245361328
2016	42.8571434020996
2017	43.8095245361328
2018	39.523811340332
2019	36.6666679382324
2020	36.6666679382324
2021	38.0952377319336
2022	41.0377349853516