Year	Number
1996	49.7267761230469
1998	50.8196716308594
2000	53.0054626464844
2002	57.8378372192383
2003	54.5945930480957
2004	46.766170501709
2005	52.9411773681641
2006	40.9756088256836
2007	50.4854354858398
2008	41.7475738525391
2009	35.4067001342773
2010	28.2296657562256
2011	24.1706161499023
2012	22.748815536499
2013	21.3270149230957
2014	15.384614944458
2015	13.8095235824585
2016	16.1904754638672
2017	18.5714282989502
2018	17.1428565979004
2019	15.7142858505249
2020	25.7142848968506
2021	27.1428565979004
2022	28.7735843658447