Year	Number
1996	80.9782638549805
1998	82.0652160644531
2000	81.5217361450195
2002	78.3783798217773
2003	76.7567596435547
2004	53.233829498291
2005	65.1960754394531
2006	64.2156829833984
2007	55.8252410888672
2008	40.7766990661621
2009	38.2775115966797
2010	38.7559814453125
2011	37.9146919250488
2012	37.4407577514648
2013	35.0710906982422
2014	38.461540222168
2015	36.1904754638672
2016	32.8571434020996
2017	34.2857131958008
2018	31.9047622680664
2019	31.4285717010498
2020	30.9523811340332
2021	30.9523811340332
2022	26.8867931365967