Year	Number
1996	64
1998	67.6616897583008
2000	64.6766204833984
2002	60.6965179443359
2003	55.2238807678223
2004	51.9230766296387
2005	54.3269233703613
2006	55.288459777832
2007	54.8076934814453
2008	53.8461532592773
2009	54.9763031005859
2010	54.028434753418
2011	52.582160949707
2012	53.521125793457
2013	53.521125793457
2014	53.694580078125
2015	54.1871910095215
2016	51.7241363525391
2017	53.2019691467285
2018	51.4563102722168
2019	49.7584533691406
2020	52.1739120483398
2021	51.2077293395996
2022	47.8260879516602