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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 2 |
| 1966 | 18 |
| 1967 | 48 |
| 1968 | 49 |
| 1969 | 81 |
| 1970 | 115 |
| 1971 | 99 |
| 1972 | 92 |
| 1973 | 95 |
| 1974 | 131 |
| 1975 | 68 |
| 1976 | 91 |
| 1977 | 76 |
| 1978 | 72 |
| 1979 | 86 |
| 1980 | 91 |
| 1981 | 92 |
| 1982 | 123 |
| 1983 | 108 |
| 1984 | 152 |
| 1985 | 182 |
| 1986 | 175 |
| 1987 | 175 |
| 1988 | 196 |
| 1989 | 318 |
| 1990 | 292 |
| 1991 | 279 |
| 1992 | 348 |
| 1993 | 309 |
| 1994 | 342 |
| 1995 | 370 |
| 1996 | 345 |
| 1997 | 329 |
| 1998 | 335 |
| 1999 | 399 |
| 2000 | 392 |
| 2001 | 454 |
| 2002 | 507 |
| 2003 | 539 |
| 2004 | 569 |
| 2005 | 643 |
| 2006 | 615 |
| 2007 | 700 |
| 2008 | 803 |
| 2009 | 899 |
| 2010 | 958 |
| 2011 | 1092 |
| 2012 | 1344 |
| 2013 | 1553 |
| 2014 | 1790 |
| 2015 | 1708 |
| 2016 | 1505 |
| 2017 | 1551 |
| 2018 | 1649 |
| 2019 | 1689 |
| 2020 | 1447 |
| 2021 | 976 |
| 2022 | 111 |
| 2023 | 61 |
| 2024 | 180 |