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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 1 |
| 1958 | 1 |
| 1963 | 2 |
| 1964 | 1 |
| 1966 | 2 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 2 |
| 1970 | 3 |
| 1971 | 2 |
| 1972 | 5 |
| 1973 | 5 |
| 1974 | 3 |
| 1975 | 3 |
| 1976 | 1 |
| 1977 | 4 |
| 1978 | 12 |
| 1979 | 13 |
| 1980 | 22 |
| 1981 | 17 |
| 1982 | 22 |
| 1983 | 22 |
| 1984 | 19 |
| 1985 | 17 |
| 1986 | 18 |
| 1987 | 30 |
| 1988 | 32 |
| 1989 | 29 |
| 1990 | 40 |
| 1991 | 38 |
| 1992 | 60 |
| 1993 | 55 |
| 1994 | 64 |
| 1995 | 59 |
| 1996 | 60 |
| 1997 | 65 |
| 1998 | 67 |
| 1999 | 76 |
| 2000 | 74 |
| 2001 | 65 |
| 2002 | 74 |
| 2003 | 94 |
| 2004 | 105 |
| 2005 | 110 |
| 2006 | 145 |
| 2007 | 133 |
| 2008 | 141 |
| 2009 | 146 |
| 2010 | 165 |
| 2011 | 161 |
| 2012 | 165 |
| 2013 | 205 |
| 2014 | 197 |
| 2015 | 239 |
| 2016 | 218 |
| 2017 | 208 |
| 2018 | 198 |
| 2019 | 185 |
| 2020 | 281 |
| 2021 | 302 |
| 2022 | 302 |
| 2023 | 174 |