Year	Number
1996	42.2110557556152
1998	37.5
2000	30.348258972168
2002	34.3283576965332
2003	32.3383102416992
2004	28.8461532592773
2005	33.0143547058105
2006	31.5789470672607
2007	31.1004791259766
2008	25.480770111084
2009	32.7014236450195
2010	35.5450248718262
2011	29.577465057373
2012	31.9248828887939
2013	33.8028182983398
2014	35.0961532592773
2015	34.761905670166
2016	31.4285717010498
2017	32.8571434020996
2018	35.7142868041992
2019	36.6666679382324
2020	35.238094329834
2021	39.0476188659668
2022	38.6792449951172