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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1950 | 1 |
| 1951 | 1 |
| 1952 | 3 |
| 1953 | 7 |
| 1954 | 6 |
| 1955 | 1 |
| 1956 | 18 |
| 1957 | 42 |
| 1958 | 7 |
| 1959 | 6 |
| 1960 | 46 |
| 1961 | 14 |
| 1962 | 9 |
| 1963 | 2 |
| 1969 | 34 |
| 1970 | 29 |
| 1971 | 124 |
| 1972 | 84 |
| 1973 | 240 |
| 1974 | 43 |
| 1975 | 29 |
| 1976 | 27 |
| 1977 | 8 |
| 1978 | 36 |
| 1979 | 15 |
| 1980 | 45 |
| 1981 | 30 |
| 1982 | 5 |
| 1983 | 18 |
| 1984 | 26 |
| 1985 | 34 |
| 1986 | 118 |
| 1987 | 77 |
| 1988 | 12 |
| 2024 | 0 |