Year	Number
1996	62.5
1998	64.6739120483398
2000	65.2173919677734
2002	61.6216201782227
2003	55.1351356506348
2004	52.7363166809082
2005	49.0196075439453
2006	50.4901962280273
2007	51.9417457580566
2008	53.3980598449707
2009	55.0239219665527
2010	53.5885162353516
2011	54.028434753418
2012	55.9241714477539
2013	54.502368927002
2014	49.519229888916
2015	48.0952377319336
2016	46.6666679382324
2017	43.3333320617676
2018	47.6190490722656
2019	46.1904754638672
2020	44.2857131958008
2021	45.7142868041992
2022	44.3396224975586