Year	Number
1996	14.5
1998	21.3930339813232
2000	56.2189064025879
2002	51.7412948608398
2003	52.2388076782227
2004	52.4038467407227
2005	50.961540222168
2006	42.788459777832
2007	43.269229888916
2008	39.9038467407227
2009	30.3317527770996
2010	33.1753540039063
2011	46.948356628418
2012	45.0704231262207
2013	43.6619720458984
2014	49.7536964416504
2015	47.290641784668
2016	39.4088668823242
2017	37.9310340881348
2018	33.009708404541
2019	34.2995185852051
2020	37.1980667114258
2021	38.6473426818848
2022	40.0966186523438