Year	Number
1996	47.8260879516602
1998	48.3695640563965
2000	45.1086959838867
2002	33.5135116577148
2003	27.5675678253174
2004	28.3582096099854
2005	25.9803924560547
2006	36.2745094299316
2007	32.5242729187012
2008	31.0679607391357
2009	37.7990417480469
2010	37.3205757141113
2011	36.9668235778809
2012	37.9146919250488
2013	37.4407577514648
2014	29.8076915740967
2015	29.5238094329834
2016	29.0476188659668
2017	31.4285717010498
2018	37.1428565979004
2019	35.238094329834
2020	35.238094329834
2021	36.1904754638672
2022	39.6226425170898