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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1955 | 3 |
| 1956 | 1 |
| 1957 | 1 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 3 |
| 1962 | 3 |
| 1963 | 8 |
| 1964 | 8 |
| 1965 | 8 |
| 1966 | 11 |
| 1967 | 9 |
| 1968 | 12 |
| 1969 | 16 |
| 1970 | 18 |
| 1971 | 18 |
| 1972 | 8 |
| 1973 | 12 |
| 1974 | 23 |
| 1975 | 28 |
| 1976 | 24 |
| 1977 | 38 |
| 1978 | 27 |
| 1979 | 41 |
| 1980 | 61 |
| 1981 | 53 |
| 1982 | 59 |
| 1983 | 63 |
| 1984 | 88 |
| 1985 | 95 |
| 1986 | 81 |
| 1987 | 79 |
| 1988 | 83 |
| 1989 | 115 |
| 1990 | 106 |
| 1991 | 129 |
| 1992 | 120 |
| 1993 | 114 |
| 1994 | 132 |
| 1995 | 122 |
| 1996 | 145 |
| 1997 | 142 |
| 1998 | 169 |
| 1999 | 138 |
| 2000 | 172 |
| 2001 | 163 |
| 2002 | 175 |
| 2003 | 179 |
| 2004 | 235 |
| 2005 | 249 |
| 2006 | 249 |
| 2007 | 231 |
| 2008 | 230 |
| 2009 | 247 |
| 2010 | 261 |
| 2011 | 297 |
| 2012 | 316 |
| 2013 | 282 |
| 2014 | 297 |
| 2015 | 332 |
| 2016 | 306 |
| 2017 | 306 |
| 2018 | 283 |
| 2019 | 334 |
| 2020 | 365 |
| 2021 | 385 |
| 2022 | 344 |
| 2023 | 314 |