Year	Number
1996	37.5
1998	33.3333320617676
2000	35.3233833312988
2002	34.3283576965332
2003	32.3383102416992
2004	36.538459777832
2005	26.9230766296387
2006	21.634614944458
2007	25
2008	24.519229888916
2009	24.1706161499023
2010	25.5924167633057
2011	25.3521118164063
2012	24.8826293945313
2013	24.4131450653076
2014	23.645320892334
2015	24.630542755127
2016	23.645320892334
2017	23.645320892334
2018	25.2427177429199
2019	22.2222213745117
2020	22.7053146362305
2021	21.2560386657715
2022	23.1884059906006