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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1968 | 1 |
| 1971 | 1 |
| 1973 | 46 |
| 1974 | 35 |
| 1975 | 42 |
| 1976 | 85 |
| 1977 | 135 |
| 1978 | 117 |
| 1979 | 111 |
| 1980 | 86 |
| 1981 | 120 |
| 1982 | 101 |
| 1983 | 168 |
| 1984 | 183 |
| 1985 | 212 |
| 1986 | 149 |
| 1987 | 107 |
| 1988 | 111 |
| 1989 | 149 |
| 1990 | 176 |
| 1991 | 170 |
| 1992 | 193 |
| 1993 | 231 |
| 1994 | 190 |
| 1995 | 158 |
| 1996 | 195 |
| 1997 | 211 |
| 1998 | 215 |
| 1999 | 235 |
| 2000 | 148 |
| 2001 | 158 |
| 2002 | 167 |
| 2003 | 188 |
| 2004 | 205 |
| 2005 | 244 |
| 2006 | 280 |
| 2007 | 316 |
| 2008 | 334 |
| 2009 | 372 |
| 2010 | 345 |
| 2011 | 338 |
| 2012 | 369 |
| 2013 | 397 |
| 2014 | 348 |
| 2015 | 412 |
| 2016 | 289 |
| 2017 | 240 |
| 2018 | 228 |
| 2019 | 183 |
| 2020 | 158 |
| 2021 | 84 |
| 2022 | 33 |
| 2023 | 31 |
| 2024 | 26 |
| 2025 | 18 |