Year	Number
1996	38.5
1998	39.3034820556641
2000	42.2885589599609
2002	33.8308448791504
2003	42.2885589599609
2004	46.6346168518066
2005	47.5961532592773
2006	43.75
2007	38.461540222168
2008	39.4230766296387
2009	41.2322273254395
2010	41.7061614990234
2011	41.7840385437012
2012	50.2347412109375
2013	55.3990592956543
2014	57.6354675292969
2015	56.6502456665039
2016	55.6650238037109
2017	54.679801940918
2018	55.8252410888672
2019	52.6570053100586
2020	49.2753639221191
2021	47.3429946899414
2022	48.3091773986816