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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1954 | 1 |
| 1955 | 1 |
| 1956 | 3 |
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 5 |
| 1960 | 3 |
| 1961 | 3 |
| 1962 | 21 |
| 1963 | 13 |
| 1964 | 8 |
| 1965 | 17 |
| 1966 | 12 |
| 1967 | 13 |
| 1968 | 21 |
| 1969 | 18 |
| 1970 | 25 |
| 1971 | 38 |
| 1972 | 32 |
| 1973 | 39 |
| 1974 | 37 |
| 1975 | 51 |
| 1976 | 46 |
| 1977 | 37 |
| 1978 | 70 |
| 1979 | 43 |
| 1980 | 50 |
| 1981 | 54 |
| 1982 | 48 |
| 1983 | 65 |
| 1984 | 84 |
| 1985 | 118 |
| 1986 | 105 |
| 1987 | 143 |
| 1988 | 163 |
| 1989 | 178 |
| 1990 | 196 |
| 1991 | 245 |
| 1992 | 263 |
| 1993 | 318 |
| 1994 | 301 |
| 1995 | 323 |
| 1996 | 423 |
| 1997 | 501 |
| 1998 | 704 |
| 1999 | 706 |
| 2000 | 980 |
| 2001 | 1125 |
| 2002 | 1287 |
| 2003 | 1609 |
| 2004 | 1888 |
| 2005 | 2324 |
| 2006 | 2681 |
| 2007 | 3067 |
| 2008 | 3509 |
| 2009 | 4019 |
| 2010 | 4710 |
| 2011 | 5384 |
| 2012 | 6145 |
| 2013 | 6528 |
| 2014 | 6890 |
| 2015 | 7437 |
| 2016 | 7347 |
| 2017 | 7414 |
| 2018 | 7436 |
| 2019 | 7842 |
| 2020 | 8527 |
| 2021 | 9255 |
| 2022 | 8653 |
| 2023 | 3854 |