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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 6 |
| 1956 | 2 |
| 1957 | 1 |
| 1958 | 4 |
| 1960 | 5 |
| 1961 | 4 |
| 1962 | 3 |
| 1965 | 1 |
| 1966 | 1 |
| 1967 | 1 |
| 1972 | 3 |
| 1973 | 2 |
| 1974 | 9 |
| 1975 | 49 |
| 1976 | 48 |
| 1977 | 71 |
| 1978 | 79 |
| 1979 | 83 |
| 1980 | 83 |
| 1981 | 98 |
| 1982 | 87 |
| 1983 | 154 |
| 1984 | 118 |
| 1985 | 143 |
| 1986 | 130 |
| 1987 | 160 |
| 1988 | 133 |
| 1989 | 148 |
| 1990 | 232 |
| 1991 | 287 |
| 1992 | 283 |
| 1993 | 366 |
| 1994 | 279 |
| 1995 | 363 |
| 1996 | 434 |
| 1997 | 540 |
| 1998 | 713 |
| 1999 | 879 |
| 2000 | 850 |
| 2001 | 772 |
| 2002 | 951 |
| 2003 | 929 |
| 2004 | 1346 |
| 2005 | 1657 |
| 2006 | 1898 |
| 2007 | 2202 |
| 2008 | 2416 |
| 2009 | 2854 |
| 2010 | 2810 |
| 2011 | 3005 |
| 2012 | 3258 |
| 2013 | 3790 |
| 2014 | 3716 |
| 2015 | 3729 |
| 2016 | 3709 |
| 2017 | 3853 |
| 2018 | 4315 |
| 2019 | 4335 |
| 2020 | 3207 |
| 2021 | 1931 |
| 2022 | 1159 |
| 2023 | 1094 |
| 2024 | 569 |