Year	Number
1960	2114020
1961	2185000
1962	2293000
1963	2379000
1964	2475000
1965	2563000
1966	2629000
1967	2745000
1968	2803000
1969	2877000
1970	2974000
1971	3069000
1972	3148000
1973	3278000
1974	3377000
1975	3455000
1976	3533000
1977	3613000
1978	3690000
1979	3786000
1980	3878000
1981	3956000
1982	4031000
1983	4105000
1984	4159000
1985	4233000
1986	4299000
1987	4369000
1988	4442000
1989	4518000
1990	4660000
1991	4949000
1992	5123000
1993	5261000
1994	5399000
1995	5545000
1996	5692000
1997	5836000
1998	5971000
1999	6125000
2000	6289000
2001	6439000
2002	6570000
2003	6689700
2004	6809000
2005	6930100
2006	7053700
2007	7180100
2008	7308800
2009	7485600
2010	7623600
2011	7765800
2012	7910500
2013	8059500
2014	8215700
2015	8380100
2016	8546000
2017	8713300
2018	8882800
2019	9054000
2020	9215100
2021	9371400
2022	9557500
2023	9756700