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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 15 |
| 1953 | 18 |
| 1954 | 18 |
| 1955 | 20 |
| 1956 | 17 |
| 1957 | 20 |
| 1958 | 10 |
| 1959 | 20 |
| 1960 | 17 |
| 1961 | 18 |
| 1962 | 26 |
| 1963 | 37 |
| 1964 | 53 |
| 1965 | 40 |
| 1966 | 70 |
| 1967 | 88 |
| 1968 | 73 |
| 1969 | 97 |
| 1970 | 83 |
| 1971 | 109 |
| 1972 | 128 |
| 1973 | 125 |
| 1974 | 389 |
| 1975 | 91 |
| 1976 | 115 |
| 1977 | 130 |
| 1978 | 123 |
| 1979 | 127 |
| 1980 | 127 |
| 1981 | 141 |
| 1982 | 158 |
| 1983 | 173 |
| 1984 | 216 |
| 1985 | 202 |
| 1986 | 226 |
| 1987 | 210 |
| 1988 | 184 |
| 1989 | 225 |
| 1990 | 220 |
| 1991 | 220 |
| 1992 | 382 |
| 1993 | 191 |
| 1994 | 167 |
| 1995 | 178 |
| 1996 | 133 |
| 1997 | 157 |
| 1998 | 170 |
| 1999 | 185 |
| 2000 | 183 |
| 2001 | 185 |
| 2002 | 182 |
| 2024 | 0 |