Year	Number
1960	570661
1961	608791
1962	650185
1963	699081
1964	752562
1965	810351
1966	872628
1967	939416
1968	1010972
1969	1087396
1970	1181154
1971	1282416
1972	1390270
1973	1506366
1974	1630556
1975	1763007
1976	1904229
1977	2057155
1978	2224641
1979	2405731
1980	2522440
1981	2632207
1982	2747533
1983	2869250
1984	2996570
1985	3127713
1986	3262030
1987	3399814
1988	3543008
1989	3690629
1990	3879217
1991	4076385
1992	4275795
1993	4480388
1994	4691530
1995	4908793
1996	5130728
1997	5360279
1998	5600786
1999	5858183
2000	6137001
2001	6436071
2002	6749693
2003	7073537
2004	7414140
2005	7768972
2006	8140172
2007	8527849
2008	8934612
2009	9357689
2010	9786183
2011	10219218
2012	10658602
2013	11105820
2014	11559254
2015	12021155
2016	12502904
2017	13001604
2018	13502378
2019	14015215
2020	14553419
2021	15102890
2022	15669052
2023	16265693