Maanja Akudikira Kuti Akhale Wokwatirana Chaka chilichonse
Pakhala pali kusintha kwa zaka zapakati pa banja loyamba kwa amuna ndi akazi, ndipo kuchuluka kwa kusintha kukuwoneka kuti kukukula. Nazi nambala kuchokera ku US Census Bureau ya zaka zapakati pa ukwati woyamba ndi graph ya deta kubwerera ku 1890.
Malingana ndi Pew Research Center , "banja likupitirizabe kugulitsa nawo malonda pakati pa Amereka kuzinthu zina, monga kukhazikika kwaokha kapena kukhala yekha. Malingana ndi chiwerengero cha anthu omwe adatchulidwa mu lipoti, pafupifupi theka la akuluakulu azaka 18 kapena kupitirira ali okwatiwa - 51% 2010, poyerekeza ndi 72 peresenti mu 1960. Kuleka kumeneku kuli kofunika makamaka kwa achinyamata: 20% a zaka 18 mpaka 29 adakwatirana mu 2010, poyerekeza ndi 59% mu 1960. Kugwirizana ndi izi ndikuti zaka zomwe abambo ndi akazi amakwatira kwa nthawi yoyamba zikupitirizabe kukwera m'mabuku. "
N'zomveka kuti malingaliro a anthu okhudza ukwati akusintha. Pafupifupi 39% a ku America amakhulupirira kuti ukwati ukuyamba kutha. Ngakhale izi, anthu ambiri omwe sanakwatirepo amanena kuti akufuna kukwatirana tsiku lina.
| Chaka | Amuna | Mkazi |
| 2015 | 29.2 | 27.1 |
| 2014 | 29.3 | 27.0 |
| 2013 | 29.0 | 26.6 |
| 2012 | 28.6 | 26.6 |
| 2011 | 28.7 | 26.5 |
| 2010 | 28.2 | 26.1 |
| 2009 | 28.1 | 25.9 |
| 2008 | 27.6 | 25.9 |
| 2007 | 17.5 | 25.6 |
| 2006 | 27.5 | 25.5 |
| 2005 | 27.1 | 25.3 |
| 2004 | 27.4 | 25.3 |
| 2003 | 27.1 | 25.3 |
| 2002 | 26.9 | 25.3 |
| 2001 | 26.9 | 25.1 |
| 2000 | 26.8 | 25.1 |
| 1999 | 26.9 | 25.1 |
| 1998 | 26.7 | 25.0 |
| 1997 | 26.8 | 25.0 |
| 1996 | 27.1 | 24.8 |
| 1995 | 26.9 | 24.5 |
| 1994 | 26.7 | 24.5 |
| 1993 | 26.5 | 24.5 |
| 1992 | 26.5 | 24.4 |
| 1991 | 26.3 | 24.1 |
| 1990 | 26.1 | 23.9 |
| 1989 | 26.2 | 23.8 |
| 1988 | 25.9 | 23.6 |
| 1987 | 25.8 | 23.6 |
| 1986 | 25.7 | 23.1 |
| 1985 | 25.5 | 23.3 |
| 1984 | 25.4 | 23.0 |
| 1983 | 25.4 | 22.8 |
| 1982 | 25.2 | 22.5 |
| 1981 | 24.8 | 22.3 |
| 1980 | 24.7 | 22.0 |
| 1979 | 24.4 | 22.1 |
| 1978 | 24.2 | 21.8 |
| 1977 | 24.0 | 21.6 |
| 1976 | 23.8 | 21.3 |
| 1975 | 23.5 | 21.1 |
| 1974 | 23.1 | 21.1 |
| 1973 | 23.2 | 21.0 |
| 1972 | 23.3 | 20.9 |
| 1971 | 23.1 | 20.9 |
| 1970 | 23.2 | 20.8 |
| 1969 | 23.2 | 20.8 |
| 1968 | 23.1 | 20.8 |
| 1967 | 23.1 | 20.6 |
| 1966 | 22.8 | 20.5 |
| 1965 | 22.8 | 20.6 |
| 1964 | 23.1 | 20.5 |
| 1963 | 22.8 | 20.5 |
| 1962 | 22.7 | 20.3 |
| 1961 | 22.8 | 20.3 |
| 1960 | 22.8 | 20.3 |
| 1959 | 22.5 | 20.2 |
| 1958 | 22.6 | 20.2 |
| 1957 | 22.6 | 20.3 |
| 1956 | 22.5 | 20.1 |
| 1955 | 22.6 | 20.2 |
| 1954 | 23.0 | 20.3 |
| 1953 | 22.8 | 20.2 |
| 1952 | 23.0 | 20.2 |
| 1951 | 22.9 | 20.4 |
| 1950 | 22.8 | 20.3 |
| 1949 | 22.7 | 20.3 |
| 1948 | 23.3 | 20.4 |
| 1947 | 23.7 | 20.4 |
| 1940 | 24.3 | 21.5 |
| 1930 | 24.3 | 21.3 |
| 1920 | 24.6 | 21.2 |
| 1910 | 25.1 | 21.6 |
| 1900 | 26.1 | 22.0 |
| 1890 | 26.1 | 22.0 |
Malingana ndi US Census Bureau, chiŵerengerochi chapoti kuyambira 1947 mpaka 1999 chinachokera pa Deta ya Survey Survey data. Chiwerengero cha zaka zisanachitike 1947 chikuchokera pa zolemba zakale. Kulakwitsa kwakukulu kwa zaka 0.1 ndikoyenera kuyeza zitsanzo zogwirizana ndi zomwe zili pamwambazi zomwe zikuwerengedwa zaka zoyambirira pa banja loyambirira malinga ndi Deta Yowunikira Kafukufuku Wowonongeka.
> Zotsatira:
> US Census Bureau: Tsiku la Valentine 2013: Feb. 14. Anatulutsidwa ndi Office of the US Census Bureau of Public Information Office. 2/12/2013.
> US Census Bureau: Masamba MS-2. Zakawerengedwa Zaka Zakale pa Ukwati Woyamba, mwa kugonana: 1890 mpaka lero. Tsiku lomasulidwa: May 2011.
> US Census Bureau: Zopangira Zamakono - Mawerengedwe Otsatira Ambiri.
> US Census Bureau: Chaka Chotsatira Chachikhalidwe ndi Chachikulu: 2003 Kafukufuku Wachiwerengero cha Anthu Panopa - Malipoti Ambiri Akuwerengedwa - Mndandanda P20-553 - Mabanja a America ndi Mikangano Yamoyo: 2003 ndi kalembedwe.