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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 3 |
| 1949 | 2 |
| 1950 | 1 |
| 1951 | 1 |
| 1952 | 3 |
| 1953 | 4 |
| 1954 | 9 |
| 1955 | 4 |
| 1956 | 3 |
| 1957 | 5 |
| 1958 | 1 |
| 1959 | 5 |
| 1960 | 7 |
| 1961 | 23 |
| 1962 | 17 |
| 1963 | 19 |
| 1964 | 24 |
| 1965 | 30 |
| 1966 | 32 |
| 1967 | 34 |
| 1968 | 43 |
| 1969 | 41 |
| 1970 | 35 |
| 1971 | 36 |
| 1972 | 24 |
| 1973 | 30 |
| 1974 | 40 |
| 1975 | 46 |
| 1976 | 35 |
| 1977 | 55 |
| 1978 | 64 |
| 1979 | 60 |
| 1980 | 74 |
| 1981 | 109 |
| 1982 | 122 |
| 1983 | 103 |
| 1984 | 128 |
| 1985 | 132 |
| 1986 | 129 |
| 1987 | 148 |
| 1988 | 149 |
| 1989 | 160 |
| 1990 | 159 |
| 1991 | 188 |
| 1992 | 221 |
| 1993 | 192 |
| 1994 | 206 |
| 1995 | 196 |
| 1996 | 193 |
| 1997 | 211 |
| 1998 | 255 |
| 1999 | 265 |
| 2000 | 270 |
| 2001 | 289 |
| 2002 | 320 |
| 2003 | 296 |
| 2004 | 328 |
| 2005 | 383 |
| 2006 | 421 |
| 2007 | 416 |
| 2008 | 411 |
| 2009 | 418 |
| 2010 | 455 |
| 2011 | 458 |
| 2012 | 499 |
| 2013 | 490 |
| 2014 | 537 |
| 2015 | 569 |
| 2016 | 560 |
| 2017 | 527 |
| 2018 | 556 |
| 2019 | 496 |
| 2020 | 606 |
| 2021 | 678 |
| 2022 | 649 |
| 2023 | 473 |