|
Year
|
% Income
|
Year
|
% Income
|
|
|
|
|
|
1975
|
21.2
|
1975
|
25.1
|
|
1976
|
21.7
|
1976
|
26.0
|
|
1977
|
22.4
|
1977
|
26.0
|
|
1978
|
24.7
|
1978
|
25.7
|
|
1979
|
27.5
|
1979
|
25.4
|
|
1980
|
32.3
|
1980
|
26.0
|
|
1981
|
36.4
|
1981
|
26.3
|
|
1982
|
36.1
|
1982
|
26.7
|
|
1983
|
29.7
|
1983
|
27.6
|
|
1984
|
28.3
|
1984
|
27.0
|
|
1985
|
26.3
|
1985
|
27.2
|
|
1986
|
23.8
|
1986
|
27.7
|
|
1987
|
22.7
|
1987
|
27.9
|
|
1988
|
23.1
|
1988
|
26.9
|
|
1989
|
24.8
|
1989
|
25.8
|
|
1990
|
24.9
|
1990
|
26.2
|
|
1991
|
23.3
|
1991
|
27.2
|
|
1992
|
20.9
|
1992
|
27.8
|
|
1993
|
19.1
|
1993
|
27.9
|
|
1994
|
19.7
|
1994
|
28.2
|
|
1995
|
20.3
|
1995
|
27.3
|
|
1996
|
20.0
|
1996
|
27.0
|
|
1997
|
19.8
|
1997
|
26.5
|
|
1998
|
18.8
|
1998
|
26.3
|
|
1999
|
19.3
|
1999
|
25.5
|
|
2000
|
21.7
|
2000
|
25.4
|
|
2001
|
21.2
|
2001
|
26.2
|
|
2002
|
21.3
|
2002
|
27.6
|
|
2003
|
20.3
|
2003
|
28.9
|
|
2004
|
22.2
|
2004
|
29.4
|
|
2005
|
24.9
|
2005
|
29.2
|
| more... |
more... |
more... |
more... |
|
|
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