Year	Number
1996	20.7446804046631
1998	11.702127456665
2000	58.201057434082
2002	44.9735450744629
2003	43.2160797119141
2004	52.4271850585938
2005	46.6019401550293
2006	48.7922706604004
2007	44.9275360107422
2008	37.980770111084
2009	38.3886260986328
2010	37.9146919250488
2011	39.3364944458008
2012	28.9099521636963
2013	30.3317527770996
2014	32.3809509277344
2015	41.4285697937012
2016	45.238094329834
2017	40.9523811340332
2018	36.7924537658691
2019	42.4528312683105
2020	36.3207550048828
2021	51.4150924682617
2022	48.113208770752