Year	Number
1996	60.1063842773438
1998	64.361701965332
2000	70.8994674682617
2002	57.1428565979004
2003	65.8291473388672
2004	61.6504859924316
2005	60.1941757202148
2006	63.7681159973145
2007	70.5314025878906
2008	62.5
2009	61.1374397277832
2010	54.028434753418
2011	40.7582931518555
2012	39.3364944458008
2013	35.0710906982422
2014	29.0476188659668
2015	35.7142868041992
2016	25.238094329834
2017	25.7142848968506
2018	20.7547168731689
2019	16.0377349853516
2020	12.2641506195068
2021	11.3207550048828
2022	10.3773584365845