Year	Number
1996	32.6633148193359
1998	32
2000	25.3731346130371
2002	31.343282699585
2003	36.3184089660645
2004	30.2884616851807
2005	34.9282302856445
2006	44.9760780334473
2007	44.0191383361816
2008	43.269229888916
2009	42.1800956726074
2010	42.1800956726074
2011	44.1314544677734
2012	44.1314544677734
2013	44.1314544677734
2014	40.8653831481934
2015	40.476188659668
2016	44.761905670166
2017	40.9523811340332
2018	41.4285697937012
2019	41.4285697937012
2020	40.9523811340332
2021	39.523811340332
2022	39.1509437561035