Year	Number
1996	61.7021293640137
1998	67.5531921386719
2000	62.4338607788086
2002	59.7883605957031
2003	41.2060317993164
2004	38.3495140075684
2005	47.5728149414063
2006	49.2753639221191
2007	43.961353302002
2008	49.038459777832
2009	41.7061614990234
2010	49.7630348205566
2011	49.2891006469727
2012	50.7108993530273
2013	51.6587677001953
2014	50.476188659668
2015	49.0476188659668
2016	48.0952377319336
2017	44.761905670166
2018	45.2830200195313
2019	47.6415100097656
2020	48.113208770752
2021	51.4150924682617
2022	48.113208770752