Year Millions of Persons 1960-01-01 9.15 1961-01-01 9.18 1962-01-01 9.22 1963-01-01 9.29 1964-01-01 9.38 1965-01-01 9.46 1966-01-01 9.53 1967-01-01 9.58 1968-01-01 9.62 1969-01-01 9.65 1970-01-01 9.66 1971-01-01 9.67 1972-01-01 9.71 1973-01-01 9.74 1974-01-01 9.77 1975-01-01 9.80 1976-01-01 9.82 1977-01-01 9.83 1978-01-01 9.84 1979-01-01 9.85 1980-01-01 9.86 1981-01-01 9.86 1982-01-01 9.86 1983-01-01 9.86 1984-01-01 9.86 1985-01-01 9.86 1986-01-01 9.86 1987-01-01 9.87 1988-01-01 9.90 1989-01-01 9.94 1990-01-01 9.97 1991-01-01 10.00 1992-01-01 10.05 1993-01-01 10.08 1994-01-01 10.12 1995-01-01 10.14 1996-01-01 10.16 1997-01-01 10.18 1998-01-01 10.20 1999-01-01 10.23 2000-01-01 10.25 2001-01-01 10.29 2002-01-01 10.33 2003-01-01 10.38 2004-01-01 10.42 2005-01-01 10.48 2006-01-01 10.55 2007-01-01 10.63 2008-01-01 10.71 2009-01-01 10.80 2010-01-01 10.90 2011-01-01 10.96