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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 3 |
| 1950 | 1 |
| 1951 | 1 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 2 |
| 1956 | 1 |
| 1957 | 1 |
| 1961 | 8 |
| 1962 | 6 |
| 1963 | 33 |
| 1964 | 21 |
| 1965 | 18 |
| 1966 | 18 |
| 1967 | 17 |
| 1968 | 4 |
| 1970 | 1 |
| 1971 | 3 |
| 1972 | 19 |
| 1973 | 1 |
| 1974 | 32 |
| 1975 | 43 |
| 1976 | 22 |
| 1977 | 26 |
| 1978 | 30 |
| 1979 | 42 |
| 1980 | 79 |
| 1981 | 74 |
| 1982 | 97 |
| 1983 | 106 |
| 1984 | 121 |
| 1985 | 130 |
| 1986 | 154 |
| 1987 | 175 |
| 1988 | 279 |
| 1989 | 302 |
| 1990 | 320 |
| 1991 | 357 |
| 1992 | 406 |
| 1993 | 449 |
| 1994 | 501 |
| 1995 | 595 |
| 1996 | 596 |
| 1997 | 762 |
| 1998 | 809 |
| 1999 | 740 |
| 2000 | 975 |
| 2001 | 1091 |
| 2002 | 1312 |
| 2003 | 1682 |
| 2004 | 1991 |
| 2005 | 2576 |
| 2006 | 3096 |
| 2007 | 3478 |
| 2008 | 4193 |
| 2009 | 4731 |
| 2010 | 5795 |
| 2011 | 6820 |
| 2012 | 8406 |
| 2013 | 9952 |
| 2014 | 11622 |
| 2015 | 13299 |
| 2016 | 14184 |
| 2017 | 15600 |
| 2018 | 18122 |
| 2019 | 20950 |
| 2020 | 25314 |
| 2021 | 28605 |
| 2022 | 33967 |
| 2023 | 15861 |