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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 1 |
| 1953 | 1 |
| 1955 | 1 |
| 1957 | 3 |
| 1959 | 1 |
| 1960 | 3 |
| 1961 | 4 |
| 1962 | 16 |
| 1964 | 1 |
| 1965 | 1 |
| 1966 | 12 |
| 1967 | 76 |
| 1968 | 109 |
| 1969 | 82 |
| 1970 | 102 |
| 1971 | 97 |
| 1972 | 90 |
| 1973 | 119 |
| 1974 | 133 |
| 1975 | 127 |
| 1976 | 186 |
| 1977 | 146 |
| 1978 | 245 |
| 1979 | 209 |
| 1980 | 186 |
| 1981 | 192 |
| 1982 | 235 |
| 1983 | 210 |
| 1984 | 162 |
| 1985 | 235 |
| 1986 | 235 |
| 1987 | 230 |
| 1988 | 288 |
| 1989 | 267 |
| 1990 | 208 |
| 1991 | 241 |
| 1992 | 347 |
| 1993 | 298 |
| 1994 | 277 |
| 1995 | 262 |
| 1996 | 306 |
| 1997 | 332 |
| 1998 | 364 |
| 1999 | 425 |
| 2000 | 351 |
| 2001 | 293 |
| 2002 | 259 |
| 2003 | 335 |
| 2004 | 414 |
| 2005 | 455 |
| 2006 | 574 |
| 2007 | 386 |
| 2008 | 408 |
| 2009 | 392 |
| 2010 | 443 |
| 2011 | 387 |
| 2012 | 395 |
| 2013 | 358 |
| 2014 | 350 |
| 2015 | 317 |
| 2016 | 290 |
| 2017 | 203 |
| 2018 | 156 |
| 2019 | 144 |
| 2020 | 138 |
| 2021 | 101 |
| 2022 | 55 |
| 2023 | 47 |
| 2024 | 19 |