Year	Number
1960	2089300
1961	2089300
1962	2089300
1963	2089300
1964	2089300
1965	2927000
1966	2927000
1967	2927000
1968	2927000
1969	2927000
1970	3603000
1971	3603000
1972	3603000
1973	3603000
1974	3603000
1975	4209000
1976	4356000
1977	4495000
1978	4595000
1979	4678000
1980	4820000
1981	4895050
1982	4965900
1983	5016791
1984	5127591
1985	5242497
1986	5373000
1987	5480500
1988	5601000
1989	5716000
1990	5848700
1991	5957000
1992	5929000
1993	5910000
1994	5967000
1995	6013000
1996	6032000
1997	6254000
1998	6389000
1999	6093000
2000	6056000
2001	5954000
2002	5849000
2003	5780000
2004	5688000
2005	5635000
2006	5547000
2007	5500000
2008	5338000
2009	5140000
2010	4734480
2011	4482202
2012	4169083
2013	3928425
2014	3778569
2015	3554665
2016	3104305
2017	2617672
2018	2163913
2019	1750989
2020	1478610
2021	1261073