Year	Number
1996	35.5
1998	35.3233833312988
2000	37.3134346008301
2002	50.7462692260742
2003	47.7611923217773
2004	45.1923065185547
2005	42.788459777832
2006	52.8846168518066
2007	47.1153831481934
2008	45.6730766296387
2009	45.0236968994141
2010	44.0758285522461
2011	45.5399055480957
2012	53.051643371582
2013	54.4600944519043
2014	53.694580078125
2015	50.2463035583496
2016	46.7980308532715
2017	46.305419921875
2018	47.0873794555664
2019	44.9275360107422
2020	45.8937187194824
2021	46.3768119812012
2022	50.2415466308594