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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1949 | 2 |
| 1952 | 6 |
| 1953 | 2 |
| 1956 | 3 |
| 1957 | 4 |
| 1959 | 1 |
| 1961 | 1 |
| 1965 | 1 |
| 1966 | 8 |
| 1967 | 22 |
| 1968 | 36 |
| 1969 | 31 |
| 1970 | 55 |
| 1971 | 45 |
| 1972 | 44 |
| 1973 | 56 |
| 1974 | 67 |
| 1975 | 36 |
| 1976 | 26 |
| 1977 | 39 |
| 1978 | 32 |
| 1979 | 53 |
| 1980 | 29 |
| 1981 | 42 |
| 1982 | 46 |
| 1983 | 50 |
| 1984 | 56 |
| 1985 | 71 |
| 1986 | 82 |
| 1987 | 111 |
| 1988 | 131 |
| 1989 | 156 |
| 1990 | 208 |
| 1991 | 184 |
| 1992 | 245 |
| 1993 | 250 |
| 1994 | 274 |
| 1995 | 233 |
| 1996 | 234 |
| 1997 | 268 |
| 1998 | 290 |
| 1999 | 236 |
| 2000 | 318 |
| 2001 | 376 |
| 2002 | 566 |
| 2003 | 1004 |
| 2004 | 1201 |
| 2005 | 1134 |
| 2006 | 1057 |
| 2007 | 1251 |
| 2008 | 1008 |
| 2009 | 981 |
| 2010 | 1156 |
| 2011 | 1338 |
| 2012 | 1548 |
| 2013 | 1730 |
| 2014 | 1766 |
| 2015 | 1660 |
| 2016 | 1483 |
| 2017 | 1681 |
| 2018 | 1496 |
| 2019 | 1583 |
| 2020 | 1407 |
| 2021 | 1005 |
| 2022 | 173 |
| 2023 | 48 |
| 2024 | 867 |
| 2025 | 28 |