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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1962 | 4 |
| 1963 | 2 |
| 1967 | 4 |
| 1968 | 4 |
| 1969 | 6 |
| 1970 | 8 |
| 1971 | 14 |
| 1972 | 8 |
| 1973 | 5 |
| 1974 | 9 |
| 1975 | 11 |
| 1976 | 5 |
| 1977 | 18 |
| 1978 | 16 |
| 1979 | 10 |
| 1980 | 10 |
| 1981 | 12 |
| 1982 | 6 |
| 1983 | 10 |
| 1984 | 6 |
| 1985 | 9 |
| 1986 | 11 |
| 1987 | 17 |
| 1988 | 29 |
| 1989 | 31 |
| 1990 | 23 |
| 1991 | 30 |
| 1992 | 25 |
| 1993 | 54 |
| 1994 | 44 |
| 1995 | 63 |
| 1996 | 64 |
| 1997 | 91 |
| 1998 | 86 |
| 1999 | 111 |
| 2000 | 157 |
| 2001 | 180 |
| 2002 | 234 |
| 2003 | 272 |
| 2004 | 284 |
| 2005 | 377 |
| 2006 | 474 |
| 2007 | 527 |
| 2008 | 620 |
| 2009 | 738 |
| 2010 | 867 |
| 2011 | 987 |
| 2012 | 1028 |
| 2013 | 1197 |
| 2014 | 1345 |
| 2015 | 1396 |
| 2016 | 1522 |
| 2017 | 1489 |
| 2018 | 1500 |
| 2019 | 1503 |
| 2020 | 1630 |
| 2021 | 1863 |
| 2022 | 1719 |
| 2023 | 1752 |
| 2024 | 1828 |
| 2025 | 1782 |
| 2026 | 1154 |
| 2028 | 1 |