Year	Number
1996	20.7650279998779
1998	25.6830596923828
2000	26.2295074462891
2002	41.6216201782227
2003	48.1081085205078
2004	43.2835807800293
2005	40.1960792541504
2006	37.5609741210938
2007	40.7766990661621
2008	41.7475738525391
2009	41.1483268737793
2010	40.1913871765137
2011	43.1279602050781
2012	42.1800956726074
2013	38.8625602722168
2014	37.980770111084
2015	35.7142868041992
2016	36.6666679382324
2017	34.2857131958008
2018	32.8571434020996
2019	33.8095245361328
2020	39.0476188659668
2021	39.0476188659668
2022	41.5094337463379