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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1938 2
1939 1
1942 1
1945 66
1946 250
1947 208
1948 213
1949 243
1950 425
1951 442
1952 461
1953 472
1954 508
1955 535
1956 518
1957 516
1958 484
1959 546
1960 549
1961 559
1962 713
1963 917
1964 1197
1965 1036
1966 870
1967 1254
1968 1648
1969 1591
1970 1726
1971 1979
1972 2132
1973 2333
1974 2491
1975 2506
1976 2373
1977 2399
1978 2682
1979 2980
1980 2798
1981 3021
1982 3097
1983 3304
1984 3326
1985 3591
1986 3563
1987 3594
1988 3993
1989 4227
1990 4363
1991 4591
1992 4656
1993 4796
1994 4857
1995 4778
1996 4702
1997 5010
1998 4985
1999 5380
2000 5673
2001 5780
2002 5968
2003 6721
2004 7250
2005 8152
2006 8644
2007 9459
2008 10330
2009 11002
2010 12161
2011 12318
2012 13348
2013 14383
2014 15279
2015 15933
2016 15736
2017 16237
2018 16867
2019 17387
2020 18311
2021 18141
2022 16517
2023 13918
2024 6490

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379,534 results

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Page 1
Development in the family.
Parke RD. Parke RD. Annu Rev Psychol. 2004;55:365-99. doi: 10.1146/annurev.psych.55.090902.141528. Annu Rev Psychol. 2004. PMID: 14744220 Review.
Single-parent adoptions.
Russell DH, Rosenberg AH. Russell DH, et al. N Engl J Med. 1968 Aug 1;279(5):259-60. doi: 10.1056/NEJM196808012790506. N Engl J Med. 1968. PMID: 5662778 No abstract available.
379,534 results
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