| Year | Transportation and Communications |
Commerce | Banking and Insurance |
Real Estate | Others |
| 1952 | 14.9 | 41.3 | 5.7 | 7.2 | 30.9 |
| 1953 | 13.8 | 45.6 | 4.3 | 5.1 | 31.2 |
| 1954 | 14.9 | 47.1 | 4.3 | 5.1 | 28.6 |
| 1955 | 14.6 | 44.9 | 4.9 | 6.4 | 29.2 |
| 1956 | 15.2 | 43.3 | 4.3 | 5.3 | 32.0 |
| 1957 | 15.3 | 41.4 | 4.7 | 5.3 | 33.3 |
| 1958 | 18.8 | 36.2 | 6.1 | 4.2 | 34.7 |
| 1959 | 21.4 | 33.1 | 8.4 | 4.3 | 32.7 |
| 1960 | 22.2 | 28.4 | 13.0 | 3.8 | 32.5 |
| 1961 | 17.7 | 28.4 | 15.6 | 5.1 | 33.1 |
| 1962 | 17.0 | 23.9 | 14.2 | 6.2 | 38.6 |
| 1963 | 16.8 | 23.2 | 11.0 | 6.7 | 42.4 |
| 1964 | 15.3 | 24.6 | 15.5 | 5.2 | 39.3 |
| 1965 | 16.7 | 25.6 | 18.6 | 5.2 | 33.9 |
| 1966 | 18.7 | 32.5 | 7.7 | 5.5 | 35.7 |
| 1967 | 15.8 | 33.6 | 9.0 | 6.3 | 35.3 |
| 1968 | 15.3 | 30.2 | 10.4 | 6.7 | 37.2 |
| 1969 | 16.6 | 31.9 | 10.5 | 6.4 | 34.5 |
| 1970 | 18.3 | 32.5 | 10.4 | 6.2 | 32.5 |
| 1971 | 18.8 | 30.9 | 11.4 | 6.1 | 32.8 |
| 1972 | 19.5 | 32.0 | 8.7 | 6.3 | 33.5 |
| 1973 | 19.6 | 32.9 | 8.2 | 5.8 | 33.4 |
| 1974 | 19.3 | 31.7 | 8.7 | 6.0 | 34.3 |
| 1975 | 21.6 | 26.8 | 9.4 | 6.4 | 35.7 |
| 1976 | 21.8 | 23.0 | 9.8 | 6.9 | 38.4 |
| 1977 | 20.9 | 28.5 | 9.3 | 6.1 | 35.2 |
| 1978 | 20.1 | 30.9 | 9.0 | 5.7 | 34.3 |
| 1979 | 21.3 | 25.4 | 8.9 | 6.0 | 38.4 |
| 1980 | 21.2 | 22.1 | 9.0 | 5.9 | 41.8 |
| 1981 | 19.9 | 24.1 | 8.7 | 5.5 | 41.8 |
| 1982 | 20.6 | 17.3 | 11.6 | 5.5 | 45.0 |
| 1983 | 20.0 | 17.4 | 13.1 | 5.1 | 44.3 |
| 1984 | 18.5 | 23.3 | 13.6 | 5.0 | 39.6 |
| 1985 | 15.9 | 34.4 | 12.0 | 4.5 | 33.2 |
| 1986 | 16.1 | 32.0 | 14.4 | 5.4 | 32.1 |
| 1987 | 15.5 | 33.1 | 15.3 | 5.7 | 30.4 |
| 1988 | 14.7 | 35.9 | 15.6 | 5.4 | 28.5 |
| 1989 | 14.5 | 31.2 | 21.5 | 5.2 | 27.4 |
| 1990 | 19.7 | 24.4 | 21.2 | 5.6 | 29.0 |
| 1991 | 19.5 | 28.9 | 17.8 | 5.1 | 28.7 |
| 1992 | 18.4 | 29.9 | 17.5 | 5.7 | 28.4 |
| 1993 | 18.7 | 27.3 | 18.2 | 5.7 | 30.1 |
| 1994 | 18.0 | 27.1 | 18.5 | 5.8 | 30.5 |
| 1995 | 17.0 | 27.5 | 19.4 | 5.9 | 30.2 |