Year	Number
1996	21.8579235076904
1998	33.3333320617676
2000	31.1475410461426
2002	45.9459457397461
2003	45.4054069519043
2004	48.2587051391602
2005	50.4901962280273
2006	52.1951217651367
2007	50.970874786377
2008	47.0873794555664
2009	50.2392349243164
2010	54.5454559326172
2011	48.8151664733887
2012	52.6066360473633
2013	51.1848335266113
2014	55.769229888916
2015	50.476188659668
2016	47.1428565979004
2017	44.2857131958008
2018	47.1428565979004
2019	42.8571434020996
2020	46.6666679382324
2021	41.9047622680664
2022	48.113208770752