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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 1 |
| 1957 | 1 |
| 1958 | 2 |
| 1959 | 3 |
| 1960 | 4 |
| 1961 | 2 |
| 1962 | 3 |
| 1964 | 4 |
| 1965 | 4 |
| 1966 | 4 |
| 1967 | 11 |
| 1968 | 4 |
| 1969 | 11 |
| 1970 | 6 |
| 1971 | 5 |
| 1972 | 5 |
| 1973 | 6 |
| 1974 | 10 |
| 1975 | 8 |
| 1976 | 14 |
| 1977 | 25 |
| 1978 | 24 |
| 1979 | 33 |
| 1980 | 51 |
| 1981 | 48 |
| 1982 | 43 |
| 1983 | 47 |
| 1984 | 37 |
| 1985 | 48 |
| 1986 | 46 |
| 1987 | 46 |
| 1988 | 50 |
| 1989 | 69 |
| 1990 | 98 |
| 1991 | 107 |
| 1992 | 107 |
| 1993 | 118 |
| 1994 | 117 |
| 1995 | 163 |
| 1996 | 140 |
| 1997 | 185 |
| 1998 | 128 |
| 1999 | 150 |
| 2000 | 171 |
| 2001 | 178 |
| 2002 | 150 |
| 2003 | 163 |
| 2004 | 176 |
| 2005 | 158 |
| 2006 | 187 |
| 2007 | 172 |
| 2008 | 150 |
| 2009 | 126 |
| 2010 | 145 |
| 2011 | 137 |
| 2012 | 150 |
| 2013 | 149 |
| 2014 | 134 |
| 2015 | 155 |
| 2016 | 161 |
| 2017 | 150 |
| 2018 | 138 |
| 2019 | 151 |
| 2020 | 151 |
| 2021 | 109 |
| 2022 | 39 |
| 2023 | 23 |
| 2024 | 35 |