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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 7 |
| 1965 | 27 |
| 1966 | 61 |
| 1967 | 80 |
| 1968 | 84 |
| 1969 | 92 |
| 1970 | 108 |
| 1971 | 95 |
| 1972 | 106 |
| 1973 | 182 |
| 1974 | 209 |
| 1975 | 218 |
| 1976 | 214 |
| 1977 | 251 |
| 1978 | 263 |
| 1979 | 202 |
| 1980 | 183 |
| 1981 | 176 |
| 1982 | 176 |
| 1983 | 188 |
| 1984 | 159 |
| 1985 | 141 |
| 1986 | 159 |
| 1987 | 123 |
| 1988 | 111 |
| 1989 | 98 |
| 1990 | 91 |
| 1991 | 96 |
| 1992 | 95 |
| 1993 | 92 |
| 1994 | 98 |
| 1995 | 54 |
| 1996 | 61 |
| 1997 | 78 |
| 1998 | 96 |
| 1999 | 102 |
| 2000 | 74 |
| 2001 | 72 |
| 2002 | 66 |
| 2003 | 74 |
| 2004 | 64 |
| 2005 | 81 |
| 2006 | 66 |
| 2007 | 99 |
| 2008 | 85 |
| 2009 | 82 |
| 2010 | 82 |
| 2011 | 76 |
| 2012 | 88 |
| 2013 | 103 |
| 2014 | 80 |
| 2015 | 58 |
| 2016 | 63 |
| 2017 | 57 |
| 2018 | 44 |
| 2019 | 46 |
| 2020 | 46 |
| 2021 | 37 |
| 2022 | 22 |
| 2023 | 15 |
| 2024 | 8 |