Area Database (v4.2.1)
% poorer households (with IWI value under 50)
| 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tanzania (Africa) | ||||||||||||||||||||||||||||||
| Total | 97.1 | 96.9 | 96.7 | 96.4 | 96.2 | 96.3 | 96.3 | 96.4 | 95.9 | 95.3 | 94.8 | 94.3 | 93.7 | 93.0 | 92.3 | 91.6 | 90.9 | 90.2 | 89.5 | 88.0 | 86.4 | 84.9 | 83.3 | 81.8 | 80.2 | 78.7 | 77.2 | |||
| Arusha, Manyara | 96.4 | 96.6 | 96.8 | 97.1 | 97.3 | 97.6 | 98.0 | 98.4 | 97.4 | 96.5 | 95.5 | 94.6 | 93.6 | 93.3 | 93.0 | 92.8 | 92.5 | 92.2 | 91.9 | 90.2 | 88.5 | 86.8 | 85.1 | 83.4 | 81.7 | 80.1 | 78.4 | |||
| Dar Es Salam | 88.4 | 86.9 | 85.3 | 83.8 | 82.3 | 82.8 | 83.3 | 83.9 | 81.4 | 79.0 | 76.5 | 74.1 | 71.6 | 69.9 | 68.1 | 66.3 | 64.6 | 62.8 | 61.0 | 57.7 | 54.3 | 51.0 | 47.7 | 44.3 | 41.0 | 37.7 | 34.3 | |||
| Dodoma | 98.9 | 98.1 | 97.2 | 96.4 | 95.5 | 95.6 | 95.6 | 95.6 | 95.9 | 96.2 | 96.4 | 96.7 | 97.0 | 97.2 | 97.4 | 97.6 | 97.8 | 98.0 | 98.3 | 97.8 | 97.3 | 96.8 | 96.3 | 95.9 | 95.4 | 94.9 | 94.4 | |||
| Iringa, Njombe | 97.8 | 97.6 | 97.5 | 97.4 | 97.3 | 96.2 | 95.0 | 93.9 | 94.7 | 95.4 | 96.1 | 96.9 | 97.6 | 96.0 | 94.4 | 92.9 | 91.3 | 89.7 | 88.1 | 86.3 | 84.6 | 82.8 | 81.1 | 79.3 | 77.5 | 75.8 | 74.0 | |||
| Kagera | 98.1 | 98.3 | 98.5 | 98.8 | 99.0 | 99.3 | 99.7 | 100 | 100 | 100 | 100 | 100 | 100 | 99.6 | 99.2 | 98.8 | 98.4 | 98.0 | 97.6 | 96.9 | 96.1 | 95.4 | 94.7 | 93.9 | 93.2 | 92.4 | 91.7 | |||
| Kigoma | 98.8 | 98.8 | 98.9 | 99.0 | 99.0 | 98.6 | 98.2 | 97.9 | 98.2 | 98.5 | 98.9 | 99.2 | 99.6 | 99.0 | 98.4 | 97.7 | 97.1 | 96.5 | 95.9 | 94.8 | 93.7 | 92.6 | 91.5 | 90.4 | 89.3 | 88.2 | 87.1 | |||
| Kilimanjaro | 93.8 | 93.6 | 93.4 | 93.2 | 93.1 | 92.0 | 90.8 | 89.7 | 89.8 | 89.9 | 90.1 | 90.2 | 90.3 | 88.9 | 87.5 | 86.1 | 84.6 | 83.2 | 81.8 | 78.8 | 75.8 | 72.8 | 69.8 | 66.9 | 63.9 | 60.9 | 57.9 | |||
| Lindi | 99.1 | 98.8 | 98.5 | 98.2 | 97.8 | 98.6 | 99.3 | 100 | 98.9 | 97.7 | 96.6 | 95.4 | 94.3 | 95.1 | 95.9 | 96.7 | 97.5 | 98.3 | 99.1 | 97.7 | 96.4 | 95.0 | 93.7 | 92.3 | 91.0 | 89.6 | 88.2 | |||
| Mara | 99.1 | 99.3 | 99.6 | 99.8 | 100 | 99.6 | 99.3 | 98.9 | 98.7 | 98.5 | 98.3 | 98.1 | 97.9 | 97.5 | 97.2 | 96.8 | 96.4 | 96.1 | 95.7 | 94.2 | 92.7 | 91.3 | 89.8 | 88.3 | 86.8 | 85.3 | 83.8 | |||
| Mbeya | 99.0 | 98.8 | 98.5 | 98.3 | 98.0 | 97.7 | 97.3 | 96.9 | 97.1 | 97.3 | 97.5 | 97.8 | 98.0 | 96.5 | 95.0 | 93.5 | 92.1 | 90.6 | 89.1 | 88.6 | 88.1 | 87.6 | 87.1 | 86.6 | 86.1 | 85.6 | 85.1 | |||
| Morogoro | 98.0 | 98.2 | 98.4 | 98.6 | 98.7 | 98.7 | 98.7 | 98.7 | 96.8 | 94.8 | 92.9 | 91.0 | 89.0 | 89.8 | 90.6 | 91.5 | 92.3 | 93.1 | 93.9 | 92.0 | 90.1 | 88.2 | 86.3 | 84.5 | 82.6 | 80.7 | 78.8 | |||
| Mtwara | 99.6 | 99.6 | 99.7 | 99.7 | 99.8 | 99.9 | 99.9 | 100 | 99.7 | 99.5 | 99.2 | 99.0 | 98.7 | 97.9 | 97.1 | 96.4 | 95.6 | 94.8 | 94.0 | 93.4 | 92.7 | 92.1 | 91.5 | 90.9 | 90.3 | 89.7 | 89.1 | |||
| Mwanza, Geita | 99.0 | 98.7 | 98.5 | 98.3 | 98.1 | 97.7 | 97.3 | 96.9 | 96.6 | 96.3 | 96.0 | 95.6 | 95.3 | 94.5 | 93.8 | 93.0 | 92.2 | 91.5 | 90.7 | 90.2 | 89.7 | 89.3 | 88.8 | 88.3 | 87.8 | 87.3 | 86.8 | |||
| Pemba North | 95.0 | 95.2 | 95.4 | 95.6 | 95.9 | 93.7 | 91.6 | 89.4 | 90.6 | 91.9 | 93.1 | 94.3 | 95.6 | 94.3 | 93.0 | 91.8 | 90.5 | 89.2 | 87.9 | 85.7 | 83.5 | 81.3 | 79.1 | 76.9 | 74.7 | 72.5 | 70.3 | |||
| Pemba South | 97.0 | 96.8 | 96.7 | 96.5 | 96.3 | 97.1 | 98.0 | 98.8 | 97.1 | 95.3 | 93.5 | 91.8 | 90.0 | 88.3 | 86.5 | 84.8 | 83.1 | 81.3 | 79.6 | 78.3 | 77.0 | 75.7 | 74.4 | 73.2 | 71.9 | 70.6 | 69.3 | |||
| Pwani | 98.7 | 98.7 | 98.8 | 98.9 | 99.0 | 99.3 | 99.7 | 100 | 99.3 | 98.7 | 98.0 | 97.4 | 96.7 | 96.3 | 95.9 | 95.5 | 95.1 | 94.7 | 94.3 | 92.9 | 91.6 | 90.2 | 88.8 | 87.5 | 86.1 | 84.7 | 83.4 | |||
| Rukwa, Katavi | 99.5 | 99.5 | 99.4 | 99.4 | 99.4 | 99.3 | 99.2 | 99.1 | 98.9 | 98.7 | 98.6 | 98.4 | 98.2 | 97.8 | 97.4 | 96.9 | 96.5 | 96.1 | 95.7 | 95.1 | 94.6 | 94.0 | 93.5 | 93.0 | 92.4 | 91.9 | 91.4 | |||
| Ruvuma | 99.1 | 99.0 | 98.9 | 98.7 | 98.6 | 99.1 | 99.5 | 100 | 99.4 | 98.9 | 98.3 | 97.7 | 97.2 | 96.6 | 96.1 | 95.5 | 94.9 | 94.4 | 93.8 | 92.3 | 90.7 | 89.1 | 87.5 | 86.0 | 84.4 | 82.8 | 81.3 | |||
| Shinyanga, Simiyu | 97.0 | 96.5 | 96.0 | 95.5 | 95.0 | 96.7 | 98.3 | 100 | 100.0 | 99.9 | 99.9 | 99.8 | 99.8 | 98.0 | 96.3 | 94.6 | 92.9 | 91.2 | 89.5 | 89.4 | 89.3 | 89.2 | 89.2 | 89.1 | 89.0 | 89.0 | 88.9 | |||
| Singida | 95.1 | 95.4 | 95.7 | 96.0 | 96.3 | 96.6 | 97.0 | 97.3 | 97.4 | 97.6 | 97.7 | 97.8 | 98.0 | 98.0 | 98.0 | 98.0 | 98.0 | 98.0 | 98.0 | 96.7 | 95.4 | 94.1 | 92.8 | 91.6 | 90.3 | 89.0 | 87.7 | |||
| Tabora | 99.4 | 98.8 | 98.3 | 97.7 | 97.1 | 98.1 | 99.0 | 100 | 99.2 | 98.5 | 97.7 | 97.0 | 96.2 | 96.0 | 95.7 | 95.5 | 95.3 | 95.0 | 94.8 | 94.0 | 93.2 | 92.4 | 91.7 | 90.9 | 90.1 | 89.3 | 88.5 | |||
| Tanga | 97.7 | 97.9 | 98.1 | 98.4 | 98.6 | 98.0 | 97.5 | 96.9 | 96.5 | 96.0 | 95.5 | 95.0 | 94.6 | 93.4 | 92.2 | 91.0 | 89.7 | 88.5 | 87.3 | 84.5 | 81.6 | 78.7 | 75.8 | 73.0 | 70.1 | 67.2 | 64.3 | |||
| Zanzibar North | 98.8 | 98.2 | 97.7 | 97.1 | 96.6 | 96.6 | 96.6 | 96.6 | 96.5 | 96.4 | 96.3 | 96.2 | 96.1 | 95.7 | 95.2 | 94.8 | 94.4 | 93.9 | 93.5 | 91.5 | 89.5 | 87.5 | 85.5 | 83.5 | 81.5 | 79.5 | 77.5 | |||
| Zanzibar South | 96.4 | 94.2 | 92.0 | 89.7 | 87.5 | 89.4 | 91.4 | 93.3 | 92.2 | 91.1 | 90.0 | 88.9 | 87.8 | 86.2 | 84.7 | 83.2 | 81.6 | 80.1 | 78.5 | 76.8 | 75.1 | 73.4 | 71.6 | 69.9 | 68.2 | 66.4 | 64.7 | |||
| Zanzibar West | 75.6 | 72.2 | 68.8 | 65.5 | 62.1 | 59.5 | 57.0 | 54.4 | 54.6 | 54.8 | 55.0 | 55.2 | 55.4 | 52.4 | 49.5 | 46.5 | 43.5 | 40.5 | 37.5 | 34.1 | 30.7 | 27.4 | 24.0 | 20.6 | 17.3 | 13.9 | 10.5 | |||
Lighter numbers are estimates