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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1952 | 3 |
| 1953 | 2 |
| 1955 | 4 |
| 1956 | 2 |
| 1957 | 5 |
| 1958 | 2 |
| 1959 | 10 |
| 1960 | 12 |
| 1961 | 13 |
| 1962 | 21 |
| 1964 | 1 |
| 1965 | 11 |
| 1966 | 37 |
| 1967 | 55 |
| 1968 | 82 |
| 1969 | 83 |
| 1970 | 92 |
| 1971 | 107 |
| 1972 | 100 |
| 1973 | 122 |
| 1974 | 173 |
| 1975 | 207 |
| 1976 | 228 |
| 1977 | 263 |
| 1978 | 317 |
| 1979 | 318 |
| 1980 | 312 |
| 1981 | 194 |
| 1982 | 216 |
| 1983 | 183 |
| 1984 | 260 |
| 1985 | 301 |
| 1986 | 314 |
| 1987 | 284 |
| 1988 | 286 |
| 1989 | 332 |
| 1990 | 346 |
| 1991 | 342 |
| 1992 | 360 |
| 1993 | 389 |
| 1994 | 357 |
| 1995 | 399 |
| 1996 | 482 |
| 1997 | 576 |
| 1998 | 668 |
| 1999 | 742 |
| 2000 | 767 |
| 2001 | 913 |
| 2002 | 933 |
| 2003 | 1077 |
| 2004 | 1209 |
| 2005 | 1522 |
| 2006 | 1771 |
| 2007 | 2039 |
| 2008 | 2327 |
| 2009 | 2642 |
| 2010 | 2900 |
| 2011 | 3528 |
| 2012 | 4030 |
| 2013 | 4344 |
| 2014 | 4296 |
| 2015 | 4478 |
| 2016 | 4786 |
| 2017 | 5085 |
| 2018 | 5488 |
| 2019 | 5636 |
| 2020 | 4118 |
| 2021 | 2529 |
| 2022 | 2264 |
| 2023 | 2256 |
| 2024 | 2006 |