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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 35 |
| 1966 | 79 |
| 1967 | 88 |
| 1968 | 116 |
| 1969 | 88 |
| 1970 | 95 |
| 1971 | 141 |
| 1972 | 139 |
| 1973 | 144 |
| 1974 | 152 |
| 1975 | 187 |
| 1976 | 173 |
| 1977 | 156 |
| 1978 | 222 |
| 1979 | 225 |
| 1980 | 244 |
| 1981 | 229 |
| 1982 | 255 |
| 1983 | 270 |
| 1984 | 212 |
| 1985 | 239 |
| 1986 | 208 |
| 1987 | 227 |
| 1988 | 213 |
| 1989 | 189 |
| 1990 | 203 |
| 1991 | 204 |
| 1992 | 189 |
| 1993 | 194 |
| 1994 | 155 |
| 1995 | 164 |
| 1996 | 167 |
| 1997 | 152 |
| 1998 | 134 |
| 1999 | 153 |
| 2000 | 189 |
| 2001 | 179 |
| 2002 | 194 |
| 2003 | 207 |
| 2004 | 186 |
| 2005 | 185 |
| 2006 | 212 |
| 2007 | 209 |
| 2008 | 221 |
| 2009 | 208 |
| 2010 | 230 |
| 2011 | 212 |
| 2012 | 246 |
| 2013 | 226 |
| 2014 | 218 |
| 2015 | 212 |
| 2016 | 197 |
| 2017 | 187 |
| 2018 | 155 |
| 2019 | 189 |
| 2020 | 171 |
| 2021 | 127 |
| 2022 | 110 |
| 2023 | 4 |