Year	Number
1960	4148274
1961	4288006
1962	4432401
1963	4581053
1964	4736990
1965	4901446
1966	5074618
1967	5258351
1968	5452366
1969	5655887
1970	5869147
1971	6092631
1972	6326568
1973	6570702
1974	6822133
1975	7077928
1976	7338634
1977	7605270
1978	7877262
1979	8154087
1980	8435172
1981	8720927
1982	9011342
1983	9305914
1984	9604160
1985	9905164
1986	10209054
1987	10516318
1988	10828153
1989	11145308
1990	11468146
1991	11797950
1992	12134446
1993	12476763
1994	12824358
1995	13176461
1996	13531680
1997	13889286
1998	14249042
1999	14610086
2000	14973186
2001	15339122
2002	15710941
2003	16085167
2004	16455725
2005	16820471
2006	17174375
2007	17515566
2008	17841998
2009	18153993
2010	18456450
2011	18752029
2012	19042145
2013	19328401
2014	19606795
2015	19870568
2016	20028989
2017	19854390
2018	19204694
2019	18476193
2020	18097538
2021	17904416
2022	18061363
2023	18585811