Year	Number
1996	37.1859283447266
1998	31.5
2000	30.348258972168
2002	26.3681583404541
2003	32.3383102416992
2004	22.115385055542
2005	22.4880390167236
2006	33.4928245544434
2007	29.1866035461426
2008	36.0576934814453
2009	38.8625602722168
2010	39.3364944458008
2011	35.6807518005371
2012	37.5586853027344
2013	40.3755874633789
2014	44.230770111084
2015	44.2857131958008
2016	38.5714302062988
2017	44.761905670166
2018	44.2857131958008
2019	34.2857131958008
2020	32.8571434020996
2021	30.9523811340332
2022	29.2452831268311