Year	Number
1996	56
1998	48.2587051391602
2000	51.7412948608398
2002	48.2587051391602
2003	44.7761192321777
2004	49.519229888916
2005	54.3269233703613
2006	55.288459777832
2007	54.8076934814453
2008	55.769229888916
2009	54.502368927002
2010	54.028434753418
2011	53.9906120300293
2012	55.3990592956543
2013	56.3380279541016
2014	58.6206893920898
2015	58.6206893920898
2016	58.1280784606934
2017	57.6354675292969
2018	56.7961158752441
2019	56.5217399597168
2020	57.0048294067383
2021	57.9710159301758
2022	58.4541053771973