Year	Number
1996	68.6170196533203
1998	80.3191452026367
2000	51.3227500915527
2002	58.7301597595215
2003	59.2964820861816
2004	54.8543701171875
2005	48.5436897277832
2006	48.3091773986816
2007	59.4202880859375
2008	49.038459777832
2009	40.7582931518555
2010	47.8672981262207
2011	59.2417068481445
2012	59.7156410217285
2013	60.1895751953125
2014	52.3809509277344
2015	46.6666679382324
2016	48.0952377319336
2017	48.0952377319336
2018	44.3396224975586
2019	46.698112487793
2020	48.113208770752
2021	51.4150924682617
2022	35.8490562438965