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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 |
| 1949 | 2 |
| 1950 | 1 |
| 1951 | 2 |
| 1952 | 3 |
| 1953 | 3 |
| 1956 | 1 |
| 1957 | 5 |
| 1958 | 1 |
| 1959 | 1 |
| 1960 | 5 |
| 1961 | 5 |
| 1962 | 16 |
| 1963 | 10 |
| 1964 | 59 |
| 1965 | 55 |
| 1966 | 11 |
| 1967 | 67 |
| 1968 | 166 |
| 1969 | 207 |
| 1970 | 160 |
| 1971 | 146 |
| 1972 | 61 |
| 1973 | 62 |
| 1974 | 75 |
| 1975 | 51 |
| 1976 | 31 |
| 1977 | 18 |
| 1978 | 28 |
| 1979 | 36 |
| 1980 | 32 |
| 1981 | 23 |
| 1982 | 25 |
| 1983 | 32 |
| 1984 | 27 |
| 1985 | 30 |
| 1986 | 43 |
| 1987 | 66 |
| 1988 | 86 |
| 1989 | 93 |
| 1990 | 91 |
| 1991 | 102 |
| 1992 | 136 |
| 1993 | 206 |
| 1994 | 202 |
| 1995 | 241 |
| 1996 | 259 |
| 1997 | 271 |
| 1998 | 218 |
| 1999 | 303 |
| 2000 | 311 |
| 2001 | 343 |
| 2002 | 367 |
| 2003 | 430 |
| 2004 | 441 |
| 2005 | 472 |
| 2006 | 444 |
| 2007 | 495 |
| 2008 | 506 |
| 2009 | 534 |
| 2010 | 466 |
| 2011 | 530 |
| 2012 | 548 |
| 2013 | 642 |
| 2014 | 689 |
| 2015 | 622 |
| 2016 | 601 |
| 2017 | 541 |
| 2018 | 522 |
| 2019 | 458 |
| 2020 | 344 |
| 2021 | 280 |
| 2022 | 112 |
| 2023 | 116 |
| 2024 | 121 |