Sao Tome and Principe vs Tanzania: Import product diversification index
Import product diversification index over time
- Sao Tome and Principe
- Tanzania
How they compare
Sao Tome and Principe currently reports 0.4984 against 0.4977 in Tanzania, a difference of 0.0007.
Across all 17 years both countries report, Sao Tome and Principe has been ahead every year.
Sao Tome and Principe ranks 29th and Tanzania ranks 30th of 53 countries.
Sao Tome and Principe has averaged higher in every one of the 3 decades both report.
Head to head by decade
| Decade | Sao Tome and Principe | Tanzania | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 0.5365 | 0.4124 | 0.1241 | Sao Tome and Principe |
| 2000s | 0.5513 | 0.448 | 0.1033 | Sao Tome and Principe |
| 2010s | 0.497 | 0.4895 | 0.0075 | Sao Tome and Principe |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher import product diversification index, Sao Tome and Principe or Tanzania?
- Sao Tome and Principe, at 0.4984 against 0.4977 in Tanzania as of 2011.
- What is the difference in import product diversification index between Sao Tome and Principe and Tanzania?
- 0.0007, with Sao Tome and Principe ahead.
- How many years of comparable data are there for Sao Tome and Principe and Tanzania?
- 17 years are reported by both, from 1995 to 2011.
- How do Sao Tome and Principe and Tanzania rank globally for import product diversification index?
- Sao Tome and Principe ranks 29th and Tanzania ranks 30th of 53 countries.
- Where does this data come from?
- UNCTAD Statistical Office, also reported in the UNCTAD Handbook of Statistics, various issues (http://unctadstat.unctad.org/), published as Import product diversification index. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The diversification index signals whether the structure of imports by product of a given country or group of countries differ from the structure of product of the world. Diversification index that ranges from 0 to 1 reveals the extent of the differences between the structure of trade of the country or country group and the world average. The index value closer to 1 indicates a bigger difference from the world average. It is constructed as the inverse of a Herfindahl index, using disaggregated exports at 4 digits (following the STIC3). This index is a modified Finger-Kreinin measure of similarity in trade. For more information, please consult the article of Finger, J. M. and M. E. Kreinin (1979), “A measure of ‘export similarity’ and its possible uses” in the Economic Journal , 89: 905-12.