Year	Number
1996	38.1909561157227
1998	37
2000	40.7960205078125
2002	38.8059692382813
2003	44.7761192321777
2004	47.5961532592773
2005	45.9330139160156
2006	49.7607650756836
2007	50.2392349243164
2008	52.4038467407227
2009	54.9763031005859
2010	54.028434753418
2011	51.1737098693848
2012	49.2957763671875
2013	45.5399055480957
2014	43.269229888916
2015	44.761905670166
2016	46.6666679382324
2017	48.0952377319336
2018	45.238094329834
2019	45.7142868041992
2020	45.7142868041992
2021	45.7142868041992
2022	39.6226425170898