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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1961 | 2 |
| 1962 | 1 |
| 1964 | 1 |
| 1967 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 3 |
| 1971 | 5 |
| 1972 | 7 |
| 1973 | 4 |
| 1974 | 2 |
| 1975 | 9 |
| 1976 | 13 |
| 1977 | 10 |
| 1978 | 12 |
| 1979 | 14 |
| 1980 | 15 |
| 1981 | 11 |
| 1982 | 26 |
| 1983 | 20 |
| 1984 | 28 |
| 1985 | 54 |
| 1986 | 50 |
| 1987 | 59 |
| 1988 | 52 |
| 1989 | 65 |
| 1990 | 65 |
| 1991 | 91 |
| 1992 | 90 |
| 1993 | 103 |
| 1994 | 108 |
| 1995 | 104 |
| 1996 | 109 |
| 1997 | 122 |
| 1998 | 119 |
| 1999 | 150 |
| 2000 | 141 |
| 2001 | 161 |
| 2002 | 160 |
| 2003 | 213 |
| 2004 | 255 |
| 2005 | 305 |
| 2006 | 324 |
| 2007 | 344 |
| 2008 | 358 |
| 2009 | 375 |
| 2010 | 343 |
| 2011 | 449 |
| 2012 | 504 |
| 2013 | 533 |
| 2014 | 522 |
| 2015 | 533 |
| 2016 | 589 |
| 2017 | 551 |
| 2018 | 577 |
| 2019 | 619 |
| 2020 | 686 |
| 2021 | 831 |
| 2022 | 792 |
| 2023 | 581 |