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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 17 |
| 1960 | 38 |
| 1961 | 49 |
| 1962 | 16 |
| 1963 | 94 |
| 1964 | 106 |
| 1965 | 38 |
| 1966 | 29 |
| 1967 | 34 |
| 1968 | 31 |
| 1969 | 29 |
| 1970 | 32 |
| 1971 | 38 |
| 1972 | 34 |
| 1973 | 60 |
| 1974 | 50 |
| 1975 | 62 |
| 1976 | 74 |
| 1977 | 88 |
| 1978 | 78 |
| 1979 | 98 |
| 1980 | 113 |
| 1981 | 89 |
| 1982 | 95 |
| 1983 | 119 |
| 1984 | 141 |
| 1985 | 168 |
| 1986 | 191 |
| 1987 | 213 |
| 1988 | 240 |
| 1989 | 196 |
| 1990 | 200 |
| 1991 | 205 |
| 1992 | 178 |
| 1993 | 164 |
| 1994 | 156 |
| 1995 | 153 |
| 1996 | 160 |
| 1997 | 166 |
| 1998 | 162 |
| 1999 | 143 |
| 2000 | 148 |
| 2001 | 149 |
| 2002 | 142 |
| 2003 | 141 |
| 2004 | 131 |
| 2005 | 139 |
| 2006 | 136 |
| 2007 | 161 |
| 2008 | 176 |
| 2009 | 196 |
| 2010 | 164 |
| 2011 | 167 |
| 2012 | 182 |
| 2013 | 210 |
| 2014 | 184 |
| 2015 | 209 |
| 2016 | 175 |
| 2017 | 163 |
| 2018 | 149 |
| 2019 | 154 |
| 2020 | 141 |
| 2021 | 137 |
| 2022 | 146 |
| 2023 | 22 |