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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 1 |
| 1956 | 2 |
| 1957 | 3 |
| 1958 | 1 |
| 1959 | 1 |
| 1961 | 1 |
| 1964 | 1 |
| 1965 | 8 |
| 1966 | 18 |
| 1967 | 21 |
| 1968 | 33 |
| 1969 | 33 |
| 1970 | 36 |
| 1971 | 28 |
| 1972 | 41 |
| 1973 | 40 |
| 1974 | 58 |
| 1975 | 67 |
| 1976 | 69 |
| 1977 | 70 |
| 1978 | 64 |
| 1979 | 101 |
| 1980 | 125 |
| 1981 | 118 |
| 1982 | 135 |
| 1983 | 138 |
| 1984 | 101 |
| 1985 | 141 |
| 1986 | 108 |
| 1987 | 112 |
| 1988 | 109 |
| 1989 | 131 |
| 1990 | 153 |
| 1991 | 137 |
| 1992 | 143 |
| 1993 | 174 |
| 1994 | 165 |
| 1995 | 209 |
| 1996 | 213 |
| 1997 | 208 |
| 1998 | 243 |
| 1999 | 268 |
| 2000 | 448 |
| 2001 | 553 |
| 2002 | 694 |
| 2003 | 644 |
| 2004 | 576 |
| 2005 | 606 |
| 2006 | 670 |
| 2007 | 757 |
| 2008 | 755 |
| 2009 | 735 |
| 2010 | 744 |
| 2011 | 860 |
| 2012 | 898 |
| 2013 | 815 |
| 2014 | 845 |
| 2015 | 768 |
| 2016 | 812 |
| 2017 | 868 |
| 2018 | 757 |
| 2019 | 706 |
| 2020 | 639 |
| 2021 | 570 |
| 2022 | 286 |
| 2023 | 178 |
| 2024 | 53 |