Year	Number
1996	25.2688179016113
1998	27.2727279663086
2000	28.7234039306641
2002	31.7460308074951
2003	9.5238094329834
2004	11.822660446167
2005	10.2439022064209
2006	12.1951217651367
2007	11.1650485992432
2008	4.36893224716187
2009	11.0047845840454
2010	12.380952835083
2011	15.1658763885498
2012	15.1658763885498
2013	12.3222751617432
2014	13.4615383148193
2015	11.9047622680664
2016	10
2017	11.9047622680664
2018	11.4285717010498
2019	11.9047622680664
2020	11.9047622680664
2021	10.9523811340332
2022	11.3207550048828