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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 13 |
| 1960 | 26 |
| 1961 | 27 |
| 1962 | 14 |
| 1964 | 1 |
| 1967 | 1 |
| 1968 | 2 |
| 1969 | 2 |
| 1970 | 2 |
| 1971 | 1 |
| 1972 | 4 |
| 1973 | 2 |
| 1974 | 2 |
| 1975 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1979 | 3 |
| 1980 | 2 |
| 1981 | 1 |
| 1982 | 1 |
| 1983 | 2 |
| 1984 | 2 |
| 1985 | 1 |
| 1986 | 3 |
| 1987 | 7 |
| 1988 | 5 |
| 1989 | 9 |
| 1990 | 22 |
| 1991 | 30 |
| 1992 | 40 |
| 1993 | 54 |
| 1994 | 64 |
| 1995 | 61 |
| 1996 | 47 |
| 1997 | 57 |
| 1998 | 52 |
| 1999 | 61 |
| 2000 | 66 |
| 2001 | 92 |
| 2002 | 63 |
| 2003 | 70 |
| 2004 | 91 |
| 2005 | 86 |
| 2006 | 116 |
| 2007 | 104 |
| 2008 | 105 |
| 2009 | 119 |
| 2010 | 148 |
| 2011 | 141 |
| 2012 | 150 |
| 2013 | 156 |
| 2014 | 142 |
| 2015 | 155 |
| 2016 | 135 |
| 2017 | 130 |
| 2018 | 124 |
| 2019 | 156 |
| 2020 | 92 |
| 2021 | 75 |
| 2022 | 38 |
| 2023 | 33 |
| 2024 | 87 |
| 2025 | 56 |