Year	Number
1968	112580
1969	112514
1970	112273
1971	112011
1972	111678
1973	111235
1974	110656
1975	109989
1976	109202
1977	108350
1978	107465
1979	106700
1980	105972
1981	105032
1982	103907
1983	102520
1984	101122
1985	99758
1986	98483
1987	97200
1988	96012
1989	94935
1990	93855
1991	93352
1992	93244
1993	93045
1994	93112
1995	92976
1996	92721
1997	92621
1998	92629
1999	92793
2000	92955
2001	92934
2002	92914
2003	92902
2004	93046
2005	93200
2006	93125
2007	92804
2008	92524
2009	92240
2010	91977
2011	91693
2012	91374
2013	90675
2014	89902
2015	89207
2016	88487
2017	87836
2018	87183
2019	86337
2020	85621
2021	84874
2022	84162