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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1962 | 1 |
| 1963 | 1 |
| 1964 | 4 |
| 1965 | 25 |
| 1966 | 39 |
| 1967 | 48 |
| 1968 | 37 |
| 1969 | 50 |
| 1970 | 40 |
| 1971 | 53 |
| 1972 | 47 |
| 1973 | 94 |
| 1974 | 156 |
| 1975 | 135 |
| 1976 | 213 |
| 1977 | 170 |
| 1978 | 155 |
| 1979 | 155 |
| 1980 | 161 |
| 1981 | 187 |
| 1982 | 189 |
| 1983 | 214 |
| 1984 | 210 |
| 1985 | 227 |
| 1986 | 294 |
| 1987 | 306 |
| 1988 | 355 |
| 1989 | 455 |
| 1990 | 560 |
| 1991 | 654 |
| 1992 | 675 |
| 1993 | 773 |
| 1994 | 840 |
| 1995 | 862 |
| 1996 | 857 |
| 1997 | 925 |
| 1998 | 989 |
| 1999 | 932 |
| 2000 | 1210 |
| 2001 | 1319 |
| 2002 | 1530 |
| 2003 | 1804 |
| 2004 | 2086 |
| 2005 | 2389 |
| 2006 | 2749 |
| 2007 | 3072 |
| 2008 | 3300 |
| 2009 | 3530 |
| 2010 | 3736 |
| 2011 | 4355 |
| 2012 | 4589 |
| 2013 | 4997 |
| 2014 | 4806 |
| 2015 | 4978 |
| 2016 | 4741 |
| 2017 | 4708 |
| 2018 | 4801 |
| 2019 | 5013 |
| 2020 | 4942 |
| 2021 | 4438 |
| 2022 | 2632 |
| 2023 | 2348 |
| 2024 | 960 |