Year	Number
1996	51
1998	47.7611923217773
2000	50.7462692260742
2002	57.2139320373535
2003	60.1990051269531
2004	56.730770111084
2005	58.6538467407227
2006	56.25
2007	54.8076934814453
2008	54.8076934814453
2009	50.7108993530273
2010	54.502368927002
2011	54.9295768737793
2012	31.4553985595703
2013	38.4976539611816
2014	42.3645324707031
2015	40.3940887451172
2016	40.3940887451172
2017	38.4236450195313
2018	35.9223289489746
2019	33.8164253234863
2020	28.5024147033691
2021	27.5362319946289
2022	23.6714973449707