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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 10 |
| 1966 | 18 |
| 1967 | 32 |
| 1968 | 74 |
| 1969 | 66 |
| 1970 | 78 |
| 1971 | 129 |
| 1972 | 111 |
| 1973 | 87 |
| 1974 | 73 |
| 1975 | 60 |
| 1976 | 70 |
| 1977 | 57 |
| 1978 | 58 |
| 1979 | 59 |
| 1980 | 54 |
| 1981 | 82 |
| 1982 | 76 |
| 1983 | 64 |
| 1984 | 89 |
| 1985 | 68 |
| 1986 | 82 |
| 1987 | 90 |
| 1988 | 95 |
| 1989 | 91 |
| 1990 | 147 |
| 1991 | 166 |
| 1992 | 181 |
| 1993 | 218 |
| 1994 | 208 |
| 1995 | 276 |
| 1996 | 341 |
| 1997 | 348 |
| 1998 | 347 |
| 1999 | 392 |
| 2000 | 372 |
| 2001 | 316 |
| 2002 | 320 |
| 2003 | 320 |
| 2004 | 348 |
| 2005 | 426 |
| 2006 | 408 |
| 2007 | 397 |
| 2008 | 397 |
| 2009 | 402 |
| 2010 | 411 |
| 2011 | 424 |
| 2012 | 390 |
| 2013 | 425 |
| 2014 | 440 |
| 2015 | 442 |
| 2016 | 433 |
| 2017 | 417 |
| 2018 | 372 |
| 2019 | 371 |
| 2020 | 282 |
| 2021 | 171 |
| 2022 | 67 |
| 2023 | 51 |
| 2024 | 17 |