Year	Number
1996	56.5
1998	47.2636833190918
2000	49.2537307739258
2002	41.7910461425781
2003	41.7910461425781
2004	49.038459777832
2005	54.3269233703613
2006	34.1346168518066
2007	35.5769233703613
2008	34.1346168518066
2009	36.4928894042969
2010	36.0189590454102
2011	37.0892028808594
2012	43.6619720458984
2013	43.1924896240234
2014	42.3645324707031
2015	40.8866996765137
2016	39.4088668823242
2017	40.3940887451172
2018	50
2019	52.1739120483398
2020	48.7922706604004
2021	48.3091773986816
2022	55.0724639892578