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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 5 |
| 1952 | 1 |
| 1953 | 12 |
| 1954 | 11 |
| 1955 | 4 |
| 1956 | 2 |
| 1957 | 4 |
| 1958 | 4 |
| 1959 | 15 |
| 1960 | 43 |
| 1961 | 49 |
| 1962 | 18 |
| 1964 | 2 |
| 1966 | 4 |
| 1967 | 10 |
| 1968 | 24 |
| 1969 | 20 |
| 1970 | 13 |
| 1971 | 15 |
| 1972 | 25 |
| 1973 | 38 |
| 1974 | 65 |
| 1975 | 149 |
| 1976 | 136 |
| 1977 | 130 |
| 1978 | 174 |
| 1979 | 142 |
| 1980 | 167 |
| 1981 | 186 |
| 1982 | 272 |
| 1983 | 215 |
| 1984 | 163 |
| 1985 | 170 |
| 1986 | 191 |
| 1987 | 160 |
| 1988 | 221 |
| 1989 | 200 |
| 1990 | 239 |
| 1991 | 272 |
| 1992 | 278 |
| 1993 | 268 |
| 1994 | 416 |
| 1995 | 410 |
| 1996 | 426 |
| 1997 | 447 |
| 1998 | 443 |
| 1999 | 540 |
| 2000 | 727 |
| 2001 | 814 |
| 2002 | 908 |
| 2003 | 821 |
| 2004 | 659 |
| 2005 | 821 |
| 2006 | 862 |
| 2007 | 810 |
| 2008 | 863 |
| 2009 | 881 |
| 2010 | 990 |
| 2011 | 1170 |
| 2012 | 1382 |
| 2013 | 1669 |
| 2014 | 1674 |
| 2015 | 1728 |
| 2016 | 1595 |
| 2017 | 1667 |
| 2018 | 1573 |
| 2019 | 1408 |
| 2020 | 1252 |
| 2021 | 911 |
| 2022 | 507 |
| 2023 | 421 |
| 2024 | 799 |
| 2025 | 7 |