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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1966 | 3 |
| 1967 | 2 |
| 1968 | 14 |
| 1969 | 15 |
| 1970 | 39 |
| 1971 | 71 |
| 1972 | 186 |
| 1973 | 237 |
| 1974 | 370 |
| 1975 | 237 |
| 1976 | 214 |
| 1977 | 195 |
| 1978 | 198 |
| 1979 | 258 |
| 1980 | 202 |
| 1981 | 164 |
| 1982 | 209 |
| 1983 | 249 |
| 1984 | 201 |
| 1985 | 182 |
| 1986 | 266 |
| 1987 | 260 |
| 1988 | 300 |
| 1989 | 375 |
| 1990 | 395 |
| 1991 | 449 |
| 1992 | 448 |
| 1993 | 457 |
| 1994 | 452 |
| 1995 | 489 |
| 1996 | 435 |
| 1997 | 557 |
| 1998 | 601 |
| 1999 | 554 |
| 2000 | 613 |
| 2001 | 711 |
| 2002 | 679 |
| 2003 | 802 |
| 2004 | 853 |
| 2005 | 924 |
| 2006 | 929 |
| 2007 | 930 |
| 2008 | 1008 |
| 2009 | 1025 |
| 2010 | 982 |
| 2011 | 1050 |
| 2012 | 1112 |
| 2013 | 1217 |
| 2014 | 1146 |
| 2015 | 1125 |
| 2016 | 1078 |
| 2017 | 1061 |
| 2018 | 941 |
| 2019 | 877 |
| 2020 | 845 |
| 2021 | 449 |
| 2022 | 63 |
| 2023 | 15 |
| 2024 | 7 |