Year	Number
1970	165000
1971	166000
1977	165000
1978	166000
1979	184000
1980	192200
1981	184400
1982	185000
1983	196000
1984	197500
1985	202000
1986	200000
1987	205000
1988	217500
1989	220400
1990	222700
1991	222700
1992	235100
1993	241800
1994	241800
1995	254000
1996	254000
1997	280000
1998	64000
1999	76700
2000	82953
2001	78805
2002	84321
2003	75046
2004	93808
2005	101313
2006	105366
2007	110634
2008	108974
2009	101237
2010	73052
2011	78558.8615502066
2012	100113.348581399
2013	371004
2014	90335.875
2015	87082
2016	94919
2017	103560
2018	94245
2019	109095
2020	3563
2021	523.761