What was the population of Chicago in 1909 1919 1929 1939 1949 1959 1969 1979 1989 1999 2009?

1909; 2.0 Million
1919; 2.6 Million
1929; 3.2 Million
1939; 3.3 Million
1949; 3.6 Million
1959; 3.5 Million
1969; 3.3 Million
1979; 3.0 Million
1989; 2.7 Million
1999; 2.8 Million
2009; 2.8 Million

since World War II population has been dropping and still is.