(source: Science Citation Index & Social Science Citation Index)
| Cited Year | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 |
|---|---|---|---|---|---|---|---|---|
| SCI | 124 | 132 | 147 | 133 | 164 | 153 | 207 | 205 |
| SSCI | 34 | 34 | 42 | 34 | 34 | 55 | 70 | 72 |
| Cited Year | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | Total |
| SCI | 228 | 261 | 257 | 279 | 342 | 410 | 261 | 4269 |
| SSCI | 89 | 78 | 77 | 91 | 122 | 113 | 75 | 1300 |
| Written Year | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 |
|---|---|---|---|---|---|---|---|---|---|---|
| # Citations | 6 | 0 | 4 | 2 | 7 | 5 | 14 | 20 | 26 | 365 |
| Written Year | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 |
| # Citations | 227 | 64 | 107 | 638 | 1547 | 62 | 318 | 131 | 139 | 98 |
| Written Year | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 |
| # Citations | 132 | 52 | 9 | 37 | 10 | 54 | 5 | 98 | 10 | 3 |