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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1962 | 6 |
| 1963 | 3 |
| 1964 | 4 |
| 1965 | 4 |
| 1966 | 6 |
| 1967 | 3 |
| 1968 | 6 |
| 1969 | 5 |
| 1970 | 9 |
| 1971 | 13 |
| 1972 | 9 |
| 1973 | 12 |
| 1974 | 9 |
| 1975 | 9 |
| 1976 | 11 |
| 1977 | 21 |
| 1978 | 12 |
| 1979 | 16 |
| 1980 | 15 |
| 1981 | 18 |
| 1982 | 18 |
| 1983 | 19 |
| 1984 | 27 |
| 1985 | 31 |
| 1986 | 34 |
| 1987 | 61 |
| 1988 | 56 |
| 1989 | 80 |
| 1990 | 97 |
| 1991 | 96 |
| 1992 | 94 |
| 1993 | 86 |
| 1994 | 124 |
| 1995 | 145 |
| 1996 | 163 |
| 1997 | 163 |
| 1998 | 262 |
| 1999 | 285 |
| 2000 | 398 |
| 2001 | 476 |
| 2002 | 545 |
| 2003 | 683 |
| 2004 | 821 |
| 2005 | 1020 |
| 2006 | 1163 |
| 2007 | 1284 |
| 2008 | 1458 |
| 2009 | 1707 |
| 2010 | 1965 |
| 2011 | 2341 |
| 2012 | 2615 |
| 2013 | 2806 |
| 2014 | 2920 |
| 2015 | 3119 |
| 2016 | 3311 |
| 2017 | 3264 |
| 2018 | 3549 |
| 2019 | 3649 |
| 2020 | 3949 |
| 2021 | 4401 |
| 2022 | 3875 |
| 2023 | 1117 |