| Year |
Article |
Acceptance |
Impact Factor |
| 1960 |
33 |
0.647 |
|
| 1961 |
44 |
0.698 |
|
| 1962 |
40 |
|
|
| 1963 |
39 |
|
|
| 1964 |
55 |
|
|
| 1965 |
80 |
|
|
| 1966 |
78 |
0.743 |
|
| 1967 |
84 |
0.757 |
|
| 1968 |
88 |
0.629 |
|
| 1969 |
102 |
0.750 |
|
| 1970 |
108 |
0.939 |
|
| 1971 |
114 |
0.675 |
|
| 1972 |
123 |
0.732 |
|
| 1973 |
137 |
0.757 |
|
| 1974 |
140 |
0.828 |
|
| 1975 |
137 |
0.820 |
|
| 1976 |
154 |
0.723 |
|
| 1977 |
160 |
0.684 |
|
| 1978 |
180 |
0.900 |
|
| 1979 |
190 |
0.876 |
|
| 1980 |
175 |
0.703 |
1.113 |
| 1981 |
180 |
0.625 |
1.101 |
| 1982 |
186 |
0.664 |
1.270 |
| 1983 |
202 |
0.795 |
1.432 |
| 1984 |
195 |
0.722 |
1.598 |
| 1985 |
189 |
0.719 |
1.466 |
| 1986 |
197 |
0.689 |
1.251 |
| 1987 |
190 |
0.717 |
1.420 |
| 1988 |
204 |
0.708 |
1.323 |
| 1989 |
163 |
0.617 |
1.360 |
| 1990 |
176 |
0.657 |
1.674 |
| 1991 |
172 |
0.754 |
1.619 |
| 1992 |
169 |
0.633 |
1.458 |
| 1993 |
171 |
0.643 |
1.703 |
| 1994 |
164 |
0.599 |
1.957 |
| 1995 |
213 |
0.705 |
1.930 |
| 1996 |
171 |
0.525 |
1.683 |
| 1997 |
202 |
0.542 |
1.792 |
| 1998 |
184 |
0.518 |
1.828 |
| 1999 |
170 |
0.518 |
2.259 |
| 2000 |
179 |
0.521 |
2.311 |
| 2001 |
179 |
0.475 |
|
|
|
|
|