Year	Number
1996	21.1956520080566
1998	17.3913040161133
2000	17.3913040161133
2002	33.5135116577148
2003	37.8378372192383
2004	38.8059692382813
2005	42.1568641662598
2006	24.5098037719727
2007	30.0970878601074
2008	27.6699028015137
2009	30.1435413360596
2010	30.6220092773438
2011	30.8056869506836
2012	28.9099521636963
2013	27.962085723877
2014	26.9230766296387
2015	20
2016	23.8095245361328
2017	18.0952377319336
2018	16.1904754638672
2019	19.5238094329834
2020	20.4761905670166
2021	18.0952377319336
2022	4.71698093414307