Year	Number
1996	51.075267791748
1998	47.5935821533203
2000	45.7446823120117
2002	37.037036895752
2003	44.4444427490234
2004	46.305419921875
2005	48.7804870605469
2006	52.1951217651367
2007	52.9126205444336
2008	57.7669906616211
2009	60.2870826721191
2010	61.4285697937012
2011	62.0853080749512
2012	63.0331764221191
2013	62.5592422485352
2014	62.019229888916
2015	55.238094329834
2016	55.7142868041992
2017	54.2857131958008
2018	52.8571434020996
2019	48.5714302062988
2020	45.7142868041992
2021	50
2022	52.8301887512207