Year	Number
1996	62.9032249450684
1998	58.2887687683105
2000	60.638298034668
2002	51.8518524169922
2003	50.7936515808105
2004	50.7389144897461
2005	53.1707305908203
2006	55.1219520568848
2007	53.3980598449707
2008	52.9126205444336
2009	52.1531105041504
2010	54.2857131958008
2011	54.502368927002
2012	51.6587677001953
2013	52.1327018737793
2014	46.1538467407227
2015	44.2857131958008
2016	54.761905670166
2017	53.3333320617676
2018	58.0952377319336
2019	58.5714302062988
2020	58.5714302062988
2021	49.523811340332
2022	48.113208770752