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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1951 | 2 |
| 1952 | 10 |
| 1953 | 8 |
| 1955 | 3 |
| 1956 | 5 |
| 1957 | 5 |
| 1958 | 12 |
| 1959 | 6 |
| 1963 | 5 |
| 1964 | 9 |
| 1965 | 70 |
| 1966 | 181 |
| 1967 | 214 |
| 1968 | 184 |
| 1969 | 215 |
| 1970 | 184 |
| 1971 | 168 |
| 1972 | 224 |
| 1973 | 235 |
| 1974 | 272 |
| 1975 | 210 |
| 1976 | 237 |
| 1977 | 261 |
| 1978 | 272 |
| 1979 | 290 |
| 1980 | 326 |
| 1981 | 302 |
| 1982 | 360 |
| 1983 | 362 |
| 1984 | 367 |
| 1985 | 403 |
| 1986 | 431 |
| 1987 | 450 |
| 1988 | 444 |
| 1989 | 482 |
| 1990 | 632 |
| 1991 | 634 |
| 1992 | 811 |
| 1993 | 874 |
| 1994 | 867 |
| 1995 | 1020 |
| 1996 | 991 |
| 1997 | 1032 |
| 1998 | 1019 |
| 1999 | 1023 |
| 2000 | 1172 |
| 2001 | 1266 |
| 2002 | 1226 |
| 2003 | 1354 |
| 2004 | 1283 |
| 2005 | 1467 |
| 2006 | 1466 |
| 2007 | 1501 |
| 2008 | 1582 |
| 2009 | 1619 |
| 2010 | 1605 |
| 2011 | 1651 |
| 2012 | 1701 |
| 2013 | 1683 |
| 2014 | 1607 |
| 2015 | 1668 |
| 2016 | 1573 |
| 2017 | 1501 |
| 2018 | 1443 |
| 2019 | 1315 |
| 2020 | 1246 |
| 2021 | 912 |
| 2022 | 136 |
| 2023 | 35 |
| 2024 | 31 |