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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 31 |
| 1963 | 57 |
| 1964 | 60 |
| 1965 | 72 |
| 1966 | 101 |
| 1967 | 105 |
| 1968 | 115 |
| 1969 | 130 |
| 1970 | 130 |
| 1971 | 166 |
| 1972 | 174 |
| 1973 | 222 |
| 1974 | 209 |
| 1975 | 240 |
| 1976 | 259 |
| 1977 | 321 |
| 1978 | 250 |
| 1979 | 249 |
| 1980 | 270 |
| 1981 | 202 |
| 1982 | 220 |
| 1983 | 199 |
| 1984 | 205 |
| 1985 | 194 |
| 1986 | 153 |
| 1987 | 145 |
| 1988 | 171 |
| 1989 | 155 |
| 1990 | 151 |
| 1991 | 196 |
| 1992 | 118 |
| 1993 | 133 |
| 1994 | 148 |
| 1995 | 152 |
| 1996 | 166 |
| 1997 | 204 |
| 1998 | 230 |
| 1999 | 210 |
| 2000 | 250 |
| 2001 | 227 |
| 2002 | 242 |
| 2003 | 270 |
| 2004 | 340 |
| 2005 | 466 |
| 2006 | 581 |
| 2007 | 543 |
| 2008 | 556 |
| 2009 | 533 |
| 2010 | 611 |
| 2011 | 568 |
| 2012 | 555 |
| 2013 | 475 |
| 2014 | 579 |
| 2015 | 572 |
| 2016 | 533 |
| 2017 | 481 |
| 2018 | 565 |
| 2019 | 466 |
| 2020 | 344 |
| 2021 | 321 |
| 2022 | 274 |
| 2023 | 235 |
| 2024 | 206 |
| 2025 | 92 |