Year	Number
1996	52.7638206481934
1998	52.5
2000	51.7412948608398
2002	52.2388076782227
2003	46.2686576843262
2004	42.3076934814453
2005	39.2344512939453
2006	37.3205757141113
2007	41.1483268737793
2008	20.6730766296387
2009	33.6492881774902
2010	30.3317527770996
2011	28.6384983062744
2012	29.1079807281494
2013	24.4131450653076
2014	31.25
2015	29.5238094329834
2016	34.2857131958008
2017	39.523811340332
2018	34.2857131958008
2019	40
2020	40.476188659668
2021	35.238094329834
2022	38.6792449951172