Year	Number
1981	4754924
1982	4718500
1983	4743000
1984	4745500
1985	4777300
1986	4823500
1988	4893900
1990	4843900
1991	4773700
1992	4731700
1993	4701000
1994	4731200
1999	5214106
2000	5204485
2001	5123602
2002	4982947
2003	4824077
2004	4445974
2005	4042827
2006	3896263
2007	3708736
2008	3498524
2009	3288557
2010	3132972
2011	2925709
2012	2899116
2013	2803364
2014	2713646
2015	2370298
2016	2325864
2017	2334978
2018	2376848
2019	2444548
2020	2539454
2021	2616422