Year	Number
1971	274139
1972	281258
1973	289700
1974	301700
1975	303500
1976	299000
1977	294500
1982	201015
2009	301186
2010	290991
2011	271651
2012	269673
2013	269351.5
2014	266077
2015	278964
2016	236001
2018	218923