Year	Number
1996	32.7868843078613
1998	42.0765037536621
2000	44.2622947692871
2002	46.4864883422852
2003	54.0540542602539
2004	48.2587051391602
2005	41.1764717102051
2006	36.5853652954102
2007	40.7766990661621
2008	37.8640785217285
2009	34.4497604370117
2010	30.6220092773438
2011	30.8056869506836
2012	26.5402851104736
2013	30.3317527770996
2014	25
2015	27.1428565979004
2016	26.1904754638672
2017	23.3333339691162
2018	27.1428565979004
2019	35.238094329834
2020	38.0952377319336
2021	34.2857131958008
2022	34.9056587219238