Year	Number
1960	71954
1961	72636
1962	73244
1963	73847
1964	74440
1965	75038
1966	75650
1967	76276
1968	76903
1969	77571
1970	78444
1971	79464
1972	80461
1973	81435
1974	82373
1975	83400
1976	84538
1977	85696
1978	86876
1979	88082
1980	89352
1981	90687
1982	92012
1983	93294
1984	94516
1985	95683
1986	96787
1987	97814
1988	98762
1989	99639
1990	100537
1991	101605
1992	103418
1993	105254
1994	106951
1995	108525
1996	109988
1997	111358
1998	112672
1999	113990
2000	115200
2001	116474
2002	119199
2003	121933
2004	124603
2005	127207
2006	129733
2007	132199
2008	134640
2009	137086
2010	139397
2011	140384
2012	141183
2013	141860
2014	142497
2015	143106
2016	143674
2017	144189
2018	144662
2019	145092
2020	145467
2021	145625
2022	145594
2023	145693