Year	Thousands of Persons
1973-01-01	306
1974-01-01	305
1975-01-01	301
1976-01-01	293
1977-01-01	293
1978-01-01	297
1979-01-01	289
1980-01-01	285
1981-01-01	288
1982-01-01	290
1983-01-01	285
1984-01-01	286
1985-01-01	290
1986-01-01	288
1987-01-01	284
1988-01-01	284
1989-01-01	286
1990-01-01	291
1991-01-01	294
1992-01-01	267
1993-01-01	262
1994-01-01	271
1995-01-01	264
1996-01-01	277
1997-01-01	275
1998-01-01	251
1999-01-01	246
2000-01-01	251
2001-01-01	242
2002-01-01	244
2003-01-01	244
2004-01-01	250
2005-01-01	267
2006-01-01	267
2007-01-01	248
2008-01-01	234
2009-01-01	234
2010-01-01	253
2011-01-01	231
2012-01-01	235