Year	Number
1996	43.2160797119141
1998	41.5
2000	36.8159217834473
2002	16.9154224395752
2003	16.4179096221924
2004	16.3461532592773
2005	23.4449768066406
2006	24.4019145965576
2007	22.0095691680908
2008	18.75
2009	18.0094795227051
2010	24.1706161499023
2011	25.3521118164063
2012	23.0046939849854
2013	19.2488269805908
2014	10.0961542129517
2015	13.8095235824585
2016	30.4761905670166
2017	32.3809509277344
2018	34.2857131958008
2019	26.1904754638672
2020	24.2857151031494
2021	23.8095245361328
2022	23.5849056243896