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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 3 |
| 1966 | 13 |
| 1967 | 19 |
| 1968 | 11 |
| 1969 | 8 |
| 1970 | 11 |
| 1971 | 21 |
| 1972 | 20 |
| 1973 | 19 |
| 1974 | 21 |
| 1975 | 21 |
| 1976 | 35 |
| 1977 | 23 |
| 1978 | 27 |
| 1979 | 16 |
| 1980 | 26 |
| 1981 | 27 |
| 1982 | 33 |
| 1983 | 34 |
| 1984 | 38 |
| 1985 | 40 |
| 1986 | 19 |
| 1987 | 31 |
| 1988 | 44 |
| 1989 | 46 |
| 1990 | 59 |
| 1991 | 58 |
| 1992 | 44 |
| 1993 | 59 |
| 1994 | 51 |
| 1995 | 61 |
| 1996 | 69 |
| 1997 | 65 |
| 1998 | 65 |
| 1999 | 67 |
| 2000 | 80 |
| 2001 | 91 |
| 2002 | 85 |
| 2003 | 115 |
| 2004 | 141 |
| 2005 | 155 |
| 2006 | 184 |
| 2007 | 243 |
| 2008 | 206 |
| 2009 | 266 |
| 2010 | 315 |
| 2011 | 282 |
| 2012 | 291 |
| 2013 | 382 |
| 2014 | 353 |
| 2015 | 313 |
| 2016 | 315 |
| 2017 | 344 |
| 2018 | 364 |
| 2019 | 384 |
| 2020 | 282 |
| 2021 | 144 |
| 2022 | 17 |
| 2023 | 8 |
| 2024 | 54 |