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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 6 |
| 1952 | 2 |
| 1953 | 1 |
| 1957 | 1 |
| 1959 | 14 |
| 1960 | 18 |
| 1961 | 17 |
| 1962 | 27 |
| 1963 | 1 |
| 1964 | 5 |
| 1965 | 25 |
| 1966 | 49 |
| 1967 | 102 |
| 1968 | 81 |
| 1969 | 4 |
| 1970 | 6 |
| 1972 | 6 |
| 1973 | 21 |
| 1974 | 22 |
| 1975 | 188 |
| 1976 | 252 |
| 1977 | 228 |
| 1978 | 224 |
| 1979 | 240 |
| 1980 | 237 |
| 1981 | 238 |
| 1982 | 262 |
| 1983 | 254 |
| 1984 | 299 |
| 1985 | 301 |
| 1986 | 277 |
| 1987 | 261 |
| 1988 | 352 |
| 1989 | 754 |
| 1990 | 2027 |
| 1991 | 2249 |
| 1992 | 2312 |
| 1993 | 2495 |
| 1994 | 2698 |
| 1995 | 2983 |
| 1996 | 3209 |
| 1997 | 3431 |
| 1998 | 3942 |
| 1999 | 4223 |
| 2000 | 4765 |
| 2001 | 5096 |
| 2002 | 5743 |
| 2003 | 6414 |
| 2004 | 7344 |
| 2005 | 8091 |
| 2006 | 8950 |
| 2007 | 9490 |
| 2008 | 10177 |
| 2009 | 10459 |
| 2010 | 11171 |
| 2011 | 12014 |
| 2012 | 12733 |
| 2013 | 13457 |
| 2014 | 13853 |
| 2015 | 13640 |
| 2016 | 12556 |
| 2017 | 12835 |
| 2018 | 13259 |
| 2019 | 13522 |
| 2020 | 11422 |
| 2021 | 7702 |
| 2022 | 5953 |
| 2023 | 4924 |
| 2024 | 11325 |
| 2025 | 7875 |