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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 2 |
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 3 |
| 1955 | 4 |
| 1956 | 1 |
| 1957 | 4 |
| 1958 | 2 |
| 1959 | 3 |
| 1960 | 7 |
| 1961 | 5 |
| 1962 | 16 |
| 1963 | 13 |
| 1964 | 11 |
| 1965 | 13 |
| 1966 | 8 |
| 1967 | 13 |
| 1968 | 22 |
| 1969 | 30 |
| 1970 | 33 |
| 1971 | 26 |
| 1972 | 41 |
| 1973 | 48 |
| 1974 | 56 |
| 1975 | 49 |
| 1976 | 45 |
| 1977 | 66 |
| 1978 | 48 |
| 1979 | 58 |
| 1980 | 62 |
| 1981 | 52 |
| 1982 | 65 |
| 1983 | 74 |
| 1984 | 91 |
| 1985 | 94 |
| 1986 | 111 |
| 1987 | 117 |
| 1988 | 120 |
| 1989 | 133 |
| 1990 | 138 |
| 1991 | 130 |
| 1992 | 176 |
| 1993 | 179 |
| 1994 | 219 |
| 1995 | 239 |
| 1996 | 301 |
| 1997 | 316 |
| 1998 | 357 |
| 1999 | 387 |
| 2000 | 528 |
| 2001 | 632 |
| 2002 | 611 |
| 2003 | 800 |
| 2004 | 1000 |
| 2005 | 1097 |
| 2006 | 1243 |
| 2007 | 1442 |
| 2008 | 1692 |
| 2009 | 1875 |
| 2010 | 2186 |
| 2011 | 2498 |
| 2012 | 2776 |
| 2013 | 2922 |
| 2014 | 3152 |
| 2015 | 3486 |
| 2016 | 3475 |
| 2017 | 3580 |
| 2018 | 3702 |
| 2019 | 3812 |
| 2020 | 4259 |
| 2021 | 4518 |
| 2022 | 4489 |
| 2023 | 1908 |