Year	Number
1996	37.6884422302246
1998	38
2000	40.7960205078125
2002	40.2985076904297
2003	46.2686576843262
2004	46.6346168518066
2005	46.8899536132813
2006	46.8899536132813
2007	46.8899536132813
2008	49.038459777832
2009	49.2891006469727
2010	49.7630348205566
2011	49.2957763671875
2012	46.948356628418
2013	47.417839050293
2014	42.788459777832
2015	37.6190490722656
2016	30
2017	30.4761905670166
2018	27.1428565979004
2019	28.5714282989502
2020	27.1428565979004
2021	24.761905670166
2022	24.056604385376