Year	Number
1996	63.0434799194336
1998	64.1304321289063
2000	65.2173919677734
2002	57.2972984313965
2003	51.8918914794922
2004	47.2636833190918
2005	43.1372566223145
2006	40.6862754821777
2007	35.9223289489746
2008	38.8349533081055
2009	38.2775115966797
2010	39.2344512939453
2011	38.3886260986328
2012	45.0236968994141
2013	51.1848335266113
2014	49.038459777832
2015	47.1428565979004
2016	46.6666679382324
2017	49.0476188659668
2018	43.3333320617676
2019	41.4285697937012
2020	38.5714302062988
2021	35.238094329834
2022	40.5660362243652