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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1949 | 1 |
| 1950 | 2 |
| 1951 | 3 |
| 1953 | 5 |
| 1955 | 1 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 3 |
| 1960 | 2 |
| 1961 | 103 |
| 1962 | 18 |
| 1963 | 161 |
| 1964 | 31 |
| 1965 | 56 |
| 1966 | 149 |
| 1967 | 122 |
| 1968 | 125 |
| 1969 | 138 |
| 1970 | 103 |
| 1971 | 104 |
| 1972 | 78 |
| 1973 | 85 |
| 1974 | 68 |
| 1975 | 123 |
| 1976 | 82 |
| 1977 | 69 |
| 1978 | 82 |
| 1979 | 73 |
| 1980 | 102 |
| 1981 | 82 |
| 1982 | 55 |
| 1983 | 68 |
| 1984 | 52 |
| 1985 | 54 |
| 1986 | 67 |
| 1987 | 77 |
| 1988 | 84 |
| 1989 | 68 |
| 1990 | 279 |
| 1991 | 155 |
| 1992 | 108 |
| 1993 | 96 |
| 1994 | 57 |
| 1995 | 104 |
| 1996 | 40 |
| 1997 | 44 |
| 1998 | 55 |
| 1999 | 33 |
| 2000 | 59 |
| 2001 | 48 |
| 2002 | 70 |
| 2003 | 43 |
| 2004 | 28 |
| 2005 | 9 |
| 2006 | 9 |
| 2007 | 11 |
| 2008 | 11 |
| 2009 | 7 |
| 2010 | 8 |
| 2011 | 11 |
| 2012 | 13 |
| 2013 | 6 |
| 2014 | 5 |
| 2015 | 10 |
| 2016 | 17 |
| 2017 | 16 |
| 2018 | 21 |
| 2019 | 23 |
| 2020 | 24 |
| 2021 | 34 |
| 2022 | 29 |
| 2023 | 25 |
| 2024 | 27 |
| 2025 | 28 |