Year	Number
1996	41.5300559997559
1998	33.8797798156738
2000	45.9016380310059
2002	42.7027015686035
2003	45.4054069519043
2004	46.2686576843262
2005	43.6274528503418
2006	48.2926826477051
2007	42.7184448242188
2008	40.7766990661621
2009	37.7990417480469
2010	39.7129173278809
2011	37.4407577514648
2012	44.5497627258301
2013	43.6018943786621
2014	53.8461532592773
2015	46.1904754638672
2016	42.3809509277344
2017	46.6666679382324
2018	48.5714302062988
2019	52.3809509277344
2020	51.4285697937012
2021	51.4285697937012
2022	50.4716987609863