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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 3 |
| 1958 | 2 |
| 1959 | 1 |
| 1960 | 6 |
| 1961 | 2 |
| 1962 | 14 |
| 1963 | 8 |
| 1964 | 6 |
| 1965 | 10 |
| 1966 | 7 |
| 1967 | 7 |
| 1968 | 10 |
| 1969 | 20 |
| 1970 | 15 |
| 1971 | 25 |
| 1972 | 32 |
| 1973 | 30 |
| 1974 | 25 |
| 1975 | 28 |
| 1976 | 31 |
| 1977 | 33 |
| 1978 | 36 |
| 1979 | 31 |
| 1980 | 32 |
| 1981 | 44 |
| 1982 | 34 |
| 1983 | 45 |
| 1984 | 61 |
| 1985 | 65 |
| 1986 | 79 |
| 1987 | 100 |
| 1988 | 107 |
| 1989 | 111 |
| 1990 | 130 |
| 1991 | 140 |
| 1992 | 171 |
| 1993 | 231 |
| 1994 | 281 |
| 1995 | 326 |
| 1996 | 367 |
| 1997 | 497 |
| 1998 | 536 |
| 1999 | 648 |
| 2000 | 867 |
| 2001 | 1091 |
| 2002 | 1225 |
| 2003 | 1487 |
| 2004 | 1939 |
| 2005 | 2286 |
| 2006 | 2699 |
| 2007 | 3133 |
| 2008 | 3582 |
| 2009 | 4272 |
| 2010 | 5067 |
| 2011 | 5970 |
| 2012 | 6565 |
| 2013 | 7183 |
| 2014 | 7591 |
| 2015 | 8033 |
| 2016 | 8258 |
| 2017 | 8432 |
| 2018 | 8517 |
| 2019 | 8864 |
| 2020 | 9586 |
| 2021 | 10582 |
| 2022 | 8927 |
| 2023 | 64 |