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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1952 | 3 |
| 1953 | 2 |
| 1956 | 2 |
| 1961 | 1 |
| 1962 | 3 |
| 1963 | 5 |
| 1964 | 9 |
| 1965 | 13 |
| 1966 | 17 |
| 1967 | 4 |
| 1968 | 12 |
| 1969 | 18 |
| 1970 | 17 |
| 1971 | 13 |
| 1972 | 37 |
| 1973 | 45 |
| 1974 | 45 |
| 1975 | 55 |
| 1976 | 61 |
| 1977 | 58 |
| 1978 | 72 |
| 1979 | 74 |
| 1980 | 120 |
| 1981 | 96 |
| 1982 | 84 |
| 1983 | 87 |
| 1984 | 90 |
| 1985 | 133 |
| 1986 | 114 |
| 1987 | 160 |
| 1988 | 202 |
| 1989 | 166 |
| 1990 | 179 |
| 1991 | 204 |
| 1992 | 239 |
| 1993 | 206 |
| 1994 | 185 |
| 1995 | 250 |
| 1996 | 208 |
| 1997 | 183 |
| 1998 | 264 |
| 1999 | 239 |
| 2000 | 265 |
| 2001 | 246 |
| 2002 | 270 |
| 2003 | 232 |
| 2004 | 232 |
| 2005 | 234 |
| 2006 | 256 |
| 2007 | 268 |
| 2008 | 262 |
| 2009 | 313 |
| 2010 | 425 |
| 2011 | 703 |
| 2012 | 942 |
| 2013 | 1007 |
| 2014 | 1199 |
| 2015 | 1348 |
| 2016 | 1254 |
| 2017 | 1239 |
| 2018 | 867 |
| 2019 | 181 |
| 2020 | 131 |
| 2021 | 13 |
| 2024 | 0 |