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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 2 |
| 1953 | 2 |
| 1954 | 3 |
| 1956 | 6 |
| 1957 | 7 |
| 1958 | 6 |
| 1959 | 7 |
| 1960 | 10 |
| 1961 | 19 |
| 1962 | 11 |
| 1964 | 1 |
| 1965 | 27 |
| 1966 | 75 |
| 1967 | 97 |
| 1968 | 111 |
| 1969 | 122 |
| 1970 | 146 |
| 1971 | 132 |
| 1972 | 171 |
| 1973 | 152 |
| 1974 | 181 |
| 1975 | 184 |
| 1976 | 200 |
| 1977 | 207 |
| 1978 | 206 |
| 1979 | 243 |
| 1980 | 346 |
| 1981 | 254 |
| 1982 | 325 |
| 1983 | 364 |
| 1984 | 475 |
| 1985 | 485 |
| 1986 | 457 |
| 1987 | 445 |
| 1988 | 507 |
| 1989 | 568 |
| 1990 | 577 |
| 1991 | 567 |
| 1992 | 639 |
| 1993 | 600 |
| 1994 | 597 |
| 1995 | 667 |
| 1996 | 649 |
| 1997 | 690 |
| 1998 | 761 |
| 1999 | 747 |
| 2000 | 826 |
| 2001 | 809 |
| 2002 | 945 |
| 2003 | 946 |
| 2004 | 1001 |
| 2005 | 1079 |
| 2006 | 1066 |
| 2007 | 1192 |
| 2008 | 1242 |
| 2009 | 1393 |
| 2010 | 1542 |
| 2011 | 1809 |
| 2012 | 1850 |
| 2013 | 1777 |
| 2014 | 1998 |
| 2015 | 1948 |
| 2016 | 1986 |
| 2017 | 2108 |
| 2018 | 2076 |
| 2019 | 2149 |
| 2020 | 1918 |
| 2021 | 1575 |
| 2022 | 1457 |
| 2023 | 1245 |
| 2024 | 582 |