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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 9 |
| 1957 | 7 |
| 1958 | 9 |
| 1959 | 9 |
| 1960 | 8 |
| 1961 | 12 |
| 1962 | 4 |
| 1964 | 2 |
| 1965 | 11 |
| 1966 | 28 |
| 1967 | 45 |
| 1968 | 45 |
| 1969 | 69 |
| 1970 | 70 |
| 1971 | 103 |
| 1972 | 109 |
| 1973 | 167 |
| 1974 | 189 |
| 1975 | 163 |
| 1976 | 174 |
| 1977 | 211 |
| 1978 | 211 |
| 1979 | 282 |
| 1980 | 209 |
| 1981 | 230 |
| 1982 | 185 |
| 1983 | 202 |
| 1984 | 191 |
| 1985 | 189 |
| 1986 | 241 |
| 1987 | 283 |
| 1988 | 239 |
| 1989 | 217 |
| 1990 | 193 |
| 1991 | 190 |
| 1992 | 170 |
| 1993 | 148 |
| 1994 | 148 |
| 1995 | 145 |
| 1996 | 142 |
| 1997 | 155 |
| 1998 | 107 |
| 1999 | 118 |
| 2000 | 104 |
| 2001 | 107 |
| 2002 | 102 |
| 2003 | 128 |
| 2004 | 101 |
| 2005 | 127 |
| 2006 | 135 |
| 2007 | 147 |
| 2008 | 171 |
| 2009 | 163 |
| 2010 | 187 |
| 2011 | 178 |
| 2012 | 179 |
| 2013 | 207 |
| 2014 | 227 |
| 2015 | 224 |
| 2016 | 234 |
| 2017 | 241 |
| 2018 | 203 |
| 2019 | 189 |
| 2020 | 180 |
| 2021 | 141 |
| 2022 | 31 |
| 2023 | 14 |
| 2024 | 18 |