Year	Number
2000	30.1587295532227
2002	15.8730154037476
2003	21.608039855957
2004	23.3009700775146
2005	13.5922327041626
2006	7.72946882247925
2007	8.21256065368652
2008	11.5384616851807
2009	15.1658763885498
2010	18.4834117889404
2011	19.4312801361084
2012	23.6966819763184
2013	20.3791465759277
2014	28.0952377319336
2015	22.8571434020996
2016	31.4285717010498
2017	32.3809509277344
2018	40.0943412780762
2019	41.5094337463379
2020	40.5660362243652
2021	39.1509437561035
2022	41.9811325073242