Year	Number
1996	37.6884422302246
1998	40
2000	36.3184089660645
2002	38.8059692382813
2003	44.2786064147949
2004	38.461540222168
2005	40.6698570251465
2006	35.8851661682129
2007	37.7990417480469
2008	44.230770111084
2009	40.7582931518555
2010	37.9146919250488
2011	41.7840385437012
2012	42.2535209655762
2013	45.0704231262207
2014	38.461540222168
2015	38.5714302062988
2016	49.0476188659668
2017	46.1904754638672
2018	48.0952377319336
2019	48.5714302062988
2020	49.523811340332
2021	48.5714302062988
2022	46.2264137268066