Year	Number
1996	27.3224048614502
1998	38.7978134155273
2000	34.9726791381836
2002	32.4324340820313
2003	37.8378372192383
2004	36.8159217834473
2005	22.0588226318359
2006	33.1707305908203
2007	43.2038841247559
2008	34.9514579772949
2009	36.8421058654785
2010	38.7559814453125
2011	41.7061614990234
2012	39.3364944458008
2013	37.9146919250488
2014	28.365385055542
2015	25.7142848968506
2016	27.1428565979004
2017	26.1904754638672
2018	24.2857151031494
2019	19.0476188659668
2020	17.1428565979004
2021	23.3333339691162
2022	22.6415100097656