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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1955 | 1 |
| 1958 | 1 |
| 1959 | 4 |
| 1960 | 3 |
| 1961 | 3 |
| 1962 | 1 |
| 1964 | 4 |
| 1965 | 17 |
| 1966 | 30 |
| 1967 | 29 |
| 1968 | 40 |
| 1969 | 51 |
| 1970 | 54 |
| 1971 | 63 |
| 1972 | 67 |
| 1973 | 67 |
| 1974 | 98 |
| 1975 | 89 |
| 1976 | 134 |
| 1977 | 163 |
| 1978 | 257 |
| 1979 | 181 |
| 1980 | 224 |
| 1981 | 239 |
| 1982 | 249 |
| 1983 | 271 |
| 1984 | 261 |
| 1985 | 273 |
| 1986 | 232 |
| 1987 | 344 |
| 1988 | 497 |
| 1989 | 589 |
| 1990 | 737 |
| 1991 | 1099 |
| 1992 | 1403 |
| 1993 | 1683 |
| 1994 | 1971 |
| 1995 | 2502 |
| 1996 | 2933 |
| 1997 | 3584 |
| 1998 | 3843 |
| 1999 | 4276 |
| 2000 | 4767 |
| 2001 | 5232 |
| 2002 | 5277 |
| 2003 | 5627 |
| 2004 | 6338 |
| 2005 | 7123 |
| 2006 | 7918 |
| 2007 | 8348 |
| 2008 | 8521 |
| 2009 | 8824 |
| 2010 | 9513 |
| 2011 | 10040 |
| 2012 | 10374 |
| 2013 | 10915 |
| 2014 | 11276 |
| 2015 | 11445 |
| 2016 | 11076 |
| 2017 | 10771 |
| 2018 | 10774 |
| 2019 | 10718 |
| 2020 | 10353 |
| 2021 | 9068 |
| 2022 | 5345 |
| 2023 | 4141 |
| 2024 | 2537 |