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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1961 | 1 |
| 1976 | 1 |
| 1977 | 2 |
| 1978 | 9 |
| 1979 | 11 |
| 1980 | 12 |
| 1981 | 7 |
| 1982 | 11 |
| 1983 | 10 |
| 1984 | 17 |
| 1985 | 19 |
| 1986 | 16 |
| 1987 | 13 |
| 1988 | 21 |
| 1989 | 21 |
| 1990 | 63 |
| 1991 | 154 |
| 1992 | 180 |
| 1993 | 229 |
| 1994 | 225 |
| 1995 | 231 |
| 1996 | 322 |
| 1997 | 331 |
| 1998 | 233 |
| 1999 | 213 |
| 2000 | 249 |
| 2001 | 225 |
| 2002 | 228 |
| 2003 | 173 |
| 2004 | 205 |
| 2005 | 295 |
| 2006 | 211 |
| 2007 | 150 |
| 2008 | 180 |
| 2009 | 228 |
| 2010 | 192 |
| 2011 | 205 |
| 2012 | 224 |
| 2013 | 212 |
| 2014 | 245 |
| 2015 | 235 |
| 2016 | 208 |
| 2017 | 130 |
| 2018 | 132 |
| 2019 | 132 |
| 2020 | 93 |
| 2021 | 42 |
| 2022 | 7 |
| 2023 | 8 |
| 2024 | 6 |