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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1950 | 2 |
| 1951 | 3 |
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 7 |
| 1956 | 9 |
| 1957 | 8 |
| 1958 | 7 |
| 1959 | 22 |
| 1960 | 9 |
| 1961 | 18 |
| 1962 | 21 |
| 1963 | 25 |
| 1964 | 22 |
| 1965 | 24 |
| 1966 | 15 |
| 1967 | 16 |
| 1968 | 20 |
| 1969 | 17 |
| 1970 | 23 |
| 1971 | 36 |
| 1972 | 30 |
| 1973 | 38 |
| 1974 | 45 |
| 1975 | 49 |
| 1976 | 50 |
| 1977 | 50 |
| 1978 | 57 |
| 1979 | 60 |
| 1980 | 55 |
| 1981 | 67 |
| 1982 | 59 |
| 1983 | 74 |
| 1984 | 61 |
| 1985 | 107 |
| 1986 | 112 |
| 1987 | 123 |
| 1988 | 121 |
| 1989 | 142 |
| 1990 | 145 |
| 1991 | 155 |
| 1992 | 159 |
| 1993 | 194 |
| 1994 | 204 |
| 1995 | 209 |
| 1996 | 231 |
| 1997 | 237 |
| 1998 | 302 |
| 1999 | 251 |
| 2000 | 288 |
| 2001 | 341 |
| 2002 | 384 |
| 2003 | 465 |
| 2004 | 505 |
| 2005 | 634 |
| 2006 | 684 |
| 2007 | 722 |
| 2008 | 843 |
| 2009 | 917 |
| 2010 | 1125 |
| 2011 | 1269 |
| 2012 | 1371 |
| 2013 | 1448 |
| 2014 | 1467 |
| 2015 | 1514 |
| 2016 | 1460 |
| 2017 | 1427 |
| 2018 | 1498 |
| 2019 | 1544 |
| 2020 | 1743 |
| 2021 | 1999 |
| 2022 | 1987 |
| 2023 | 257 |