Year	Number
1996	42.5
1998	43.7810935974121
2000	40.7960205078125
2002	40.2985076904297
2003	34.3283576965332
2004	38.461540222168
2005	37.5
2006	41.3461532592773
2007	41.8269233703613
2008	41.3461532592773
2009	39.8104248046875
2010	36.4928894042969
2011	36.6197166442871
2012	35.6807518005371
2013	36.1502342224121
2014	36.9458122253418
2015	35.9605903625488
2016	37.4384231567383
2017	37.4384231567383
2018	34.9514579772949
2019	34.7826080322266
2020	35.2657012939453
2021	34.2995185852051
2022	33.8164253234863