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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1964 | 6 |
| 1965 | 18 |
| 1966 | 28 |
| 1967 | 42 |
| 1968 | 36 |
| 1969 | 37 |
| 1970 | 45 |
| 1971 | 36 |
| 1972 | 41 |
| 1973 | 50 |
| 1974 | 54 |
| 1975 | 50 |
| 1976 | 64 |
| 1977 | 91 |
| 1978 | 110 |
| 1979 | 103 |
| 1980 | 98 |
| 1981 | 102 |
| 1982 | 102 |
| 1983 | 108 |
| 1984 | 120 |
| 1985 | 137 |
| 1986 | 132 |
| 1987 | 128 |
| 1988 | 154 |
| 1989 | 215 |
| 1990 | 178 |
| 1991 | 190 |
| 1992 | 173 |
| 1993 | 158 |
| 1994 | 139 |
| 1995 | 173 |
| 1996 | 152 |
| 1997 | 130 |
| 1998 | 111 |
| 1999 | 145 |
| 2000 | 146 |
| 2001 | 149 |
| 2002 | 137 |
| 2003 | 153 |
| 2004 | 163 |
| 2005 | 195 |
| 2006 | 175 |
| 2007 | 166 |
| 2008 | 177 |
| 2009 | 186 |
| 2010 | 172 |
| 2011 | 192 |
| 2012 | 177 |
| 2013 | 163 |
| 2014 | 203 |
| 2015 | 227 |
| 2016 | 263 |
| 2017 | 279 |
| 2018 | 300 |
| 2019 | 307 |
| 2020 | 242 |
| 2021 | 159 |
| 2022 | 61 |
| 2023 | 39 |
| 2024 | 10 |