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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 4 |
| 1965 | 33 |
| 1966 | 27 |
| 1967 | 33 |
| 1968 | 49 |
| 1969 | 59 |
| 1970 | 73 |
| 1971 | 106 |
| 1972 | 88 |
| 1973 | 70 |
| 1974 | 76 |
| 1975 | 121 |
| 1976 | 117 |
| 1977 | 165 |
| 1978 | 162 |
| 1979 | 163 |
| 1980 | 192 |
| 1981 | 173 |
| 1982 | 196 |
| 1983 | 194 |
| 1984 | 207 |
| 1985 | 232 |
| 1986 | 254 |
| 1987 | 219 |
| 1988 | 213 |
| 1989 | 210 |
| 1990 | 291 |
| 1991 | 274 |
| 1992 | 290 |
| 1993 | 235 |
| 1994 | 180 |
| 1995 | 167 |
| 1996 | 176 |
| 1997 | 205 |
| 1998 | 177 |
| 1999 | 223 |
| 2000 | 174 |
| 2001 | 200 |
| 2002 | 150 |
| 2003 | 152 |
| 2004 | 121 |
| 2005 | 102 |
| 2006 | 84 |
| 2007 | 93 |
| 2008 | 93 |
| 2009 | 74 |
| 2010 | 76 |
| 2011 | 92 |
| 2012 | 95 |
| 2013 | 82 |
| 2014 | 59 |
| 2015 | 54 |
| 2016 | 39 |
| 2017 | 45 |
| 2018 | 53 |
| 2019 | 52 |
| 2020 | 49 |
| 2021 | 35 |
| 2022 | 8 |
| 2023 | 2 |
| 2024 | 12 |