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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 4 |
| 1948 | 2 |
| 1949 | 1 |
| 1950 | 3 |
| 1951 | 11 |
| 1952 | 14 |
| 1953 | 13 |
| 1954 | 11 |
| 1955 | 14 |
| 1956 | 14 |
| 1957 | 12 |
| 1958 | 11 |
| 1959 | 10 |
| 1960 | 15 |
| 1961 | 21 |
| 1962 | 21 |
| 1963 | 55 |
| 1964 | 102 |
| 1965 | 78 |
| 1966 | 113 |
| 1967 | 197 |
| 1968 | 245 |
| 1969 | 259 |
| 1970 | 244 |
| 1971 | 281 |
| 1972 | 332 |
| 1973 | 312 |
| 1974 | 405 |
| 1975 | 340 |
| 1976 | 344 |
| 1977 | 268 |
| 1978 | 194 |
| 1979 | 234 |
| 1980 | 202 |
| 1981 | 185 |
| 1982 | 172 |
| 1983 | 164 |
| 1984 | 143 |
| 1985 | 154 |
| 1986 | 166 |
| 1987 | 136 |
| 1988 | 161 |
| 1989 | 144 |
| 1990 | 153 |
| 1991 | 180 |
| 1992 | 165 |
| 1993 | 177 |
| 1994 | 212 |
| 1995 | 167 |
| 1996 | 236 |
| 1997 | 226 |
| 1998 | 238 |
| 1999 | 266 |
| 2000 | 284 |
| 2001 | 276 |
| 2002 | 290 |
| 2003 | 325 |
| 2004 | 309 |
| 2005 | 300 |
| 2006 | 255 |
| 2007 | 279 |
| 2008 | 308 |
| 2009 | 295 |
| 2010 | 275 |
| 2011 | 330 |
| 2012 | 300 |
| 2013 | 351 |
| 2014 | 286 |
| 2015 | 236 |
| 2016 | 211 |
| 2017 | 220 |
| 2018 | 208 |
| 2019 | 172 |
| 2020 | 173 |
| 2021 | 131 |
| 2022 | 73 |
| 2023 | 54 |
| 2024 | 13 |