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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1953 | 2 |
| 1954 | 1 |
| 1957 | 1 |
| 1958 | 2 |
| 1959 | 3 |
| 1960 | 3 |
| 1961 | 6 |
| 1962 | 4 |
| 1964 | 1 |
| 1965 | 6 |
| 1966 | 33 |
| 1967 | 56 |
| 1968 | 57 |
| 1969 | 57 |
| 1970 | 62 |
| 1971 | 63 |
| 1972 | 71 |
| 1973 | 108 |
| 1974 | 99 |
| 1975 | 94 |
| 1976 | 87 |
| 1977 | 116 |
| 1978 | 142 |
| 1979 | 131 |
| 1980 | 130 |
| 1981 | 138 |
| 1982 | 150 |
| 1983 | 157 |
| 1984 | 179 |
| 1985 | 182 |
| 1986 | 247 |
| 1987 | 270 |
| 1988 | 307 |
| 1989 | 424 |
| 1990 | 566 |
| 1991 | 644 |
| 1992 | 675 |
| 1993 | 873 |
| 1994 | 894 |
| 1995 | 926 |
| 1996 | 974 |
| 1997 | 1112 |
| 1998 | 1210 |
| 1999 | 1296 |
| 2000 | 1502 |
| 2001 | 1574 |
| 2002 | 1547 |
| 2003 | 1607 |
| 2004 | 1704 |
| 2005 | 1827 |
| 2006 | 2138 |
| 2007 | 2208 |
| 2008 | 2272 |
| 2009 | 2100 |
| 2010 | 2339 |
| 2011 | 2429 |
| 2012 | 2583 |
| 2013 | 2600 |
| 2014 | 2572 |
| 2015 | 2745 |
| 2016 | 2362 |
| 2017 | 2187 |
| 2018 | 2110 |
| 2019 | 1872 |
| 2020 | 1678 |
| 2021 | 1340 |
| 2022 | 471 |
| 2023 | 344 |
| 2024 | 1278 |
| 2025 | 1842 |
| 2026 | 23 |