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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1956 | 2 |
| 1958 | 5 |
| 1959 | 3 |
| 1962 | 1 |
| 1963 | 5 |
| 1964 | 6 |
| 1965 | 8 |
| 1966 | 57 |
| 1967 | 132 |
| 1968 | 225 |
| 1969 | 212 |
| 1970 | 254 |
| 1971 | 294 |
| 1972 | 432 |
| 1973 | 433 |
| 1974 | 417 |
| 1975 | 413 |
| 1976 | 434 |
| 1977 | 460 |
| 1978 | 449 |
| 1979 | 369 |
| 1980 | 213 |
| 1981 | 157 |
| 1982 | 168 |
| 1983 | 176 |
| 1984 | 238 |
| 1985 | 198 |
| 1986 | 249 |
| 1987 | 251 |
| 1988 | 297 |
| 1989 | 381 |
| 1990 | 405 |
| 1991 | 440 |
| 1992 | 417 |
| 1993 | 461 |
| 1994 | 467 |
| 1995 | 503 |
| 1996 | 533 |
| 1997 | 521 |
| 1998 | 552 |
| 1999 | 562 |
| 2000 | 611 |
| 2001 | 742 |
| 2002 | 865 |
| 2003 | 1046 |
| 2004 | 1256 |
| 2005 | 1299 |
| 2006 | 1331 |
| 2007 | 1371 |
| 2008 | 1455 |
| 2009 | 1576 |
| 2010 | 1728 |
| 2011 | 1878 |
| 2012 | 1768 |
| 2013 | 1674 |
| 2014 | 1599 |
| 2015 | 1396 |
| 2016 | 1323 |
| 2017 | 1233 |
| 2018 | 1325 |
| 2019 | 1391 |
| 2020 | 1195 |
| 2021 | 990 |
| 2022 | 757 |
| 2023 | 480 |
| 2024 | 301 |