Statizoid

Import product concentration index by country

This indicator reflects the Herfindahl-Hirschmann index measure of the degree of import concentration within a country. The sectoral Hirschmann index is defined as the square root of the sum of the squared shares of exports of each industry in total exports for the region under study. Takes a value between 0 and...

Countries reporting
53
Highest
0.8559
Liberia
Lowest
0.0609
Democratic Republic of Congo
Median
0.1389
Years covered
17
1995–2011
Data points
935

What the numbers show

Import product concentration index is currently reported for 53 countries. The highest value is 0.8559 in Liberia; the lowest is 0.0609 in Democratic Republic of Congo.

The median across all reporting countries is 0.1389, and the mean is 0.1567.

The gap between the highest and lowest reporting country is a factor of about 14.

Over the past decade 33 countries rose and 20 fell. The largest increase was in Sudan (up 160.5%), and the largest decrease in Angola (down 66.5%).

Import product concentration index: full country ranking

#Country LatestYear 10-year changeTrend
1 Liberia 0.8559 2011 up 2.3% falling
2 Sierra Leone 0.3664 2011 down 0.5% rising
3 Somalia 0.2557 2011 up 25.1% falling
4 Namibia 0.2542 2011 up 135.2% volatile
5 Seychelles 0.2454 2011 down 30.8% rising
6 Cote d'Ivoire 0.2407 2011 up 24.6% rising
7 Togo 0.2379 2011 up 89.0% rising
8 South Africa 0.2285 2011 up 19.9% rising
9 Tanzania 0.2033 2011 up 130.5% rising
10 Benin 0.202 2011 up 53.0% rising
11 Senegal 0.1904 2011 up 78.3% rising
12 Guinea 0.1826 2011 up 55.3% rising
13 Cameroon 0.1786 2011 up 20.6% rising
14 Mali 0.1753 2011 up 28.1% rising
15 Congo 0.1718 2011 up 77.3% volatile
16 Sudan 0.1705 2011 up 160.5% rising
17 Cape Verde 0.1647 2011 up 103.0% rising
18 Guinea-Bissau 0.1586 2011 up 99.5% rising
19 Central African Republic 0.1562 2011 up 52.2% rising
20 Mauritius 0.153 2011 up 51.1% rising
21 Burkina Faso 0.152 2011 up 14.8% rising
22 Ethiopia 0.1497 2011 down 2.7% rising
23 Madagascar 0.1486 2011 up 45.9% rising
24 Uganda 0.1457 2011 up 37.9% rising
25 Kenya 0.1449 2011 up 5.1% rising
26 Gambia 0.14 2011 up 16.9% rising
27 Mauritania 0.1389 2011 up 60.6% rising
28 Eswatini 0.1382 2011 up 105.5% rising
29 Djibouti 0.1359 2011 up 30.7% volatile
30 Botswana 0.1275 2011 up 73.1% rising
31 Zambia 0.1229 2011 up 62.9% rising
32 Eritrea 0.1164 2011 up 29.7% flat
33 Niger 0.112 2011 down 4.2% flat
34 Comoros 0.1114 2011 down 0.0% rising
35 Equatorial Guinea 0.1112 2011 down 50.1% falling
36 Nigeria 0.1095 2011 up 75.6% rising
37 Chad 0.1092 2011 down 28.2% flat
38 Malawi 0.1033 2011 down 9.5% rising
39 Mozambique 0.1017 2011 down 34.2% rising
40 Morocco 0.0924 2011 down 11.0% falling
41 Sao Tome and Principe 0.0903 2011 down 47.0% volatile
42 Egypt 0.0853 2011 up 3.8% rising
43 Burundi 0.0841 2011 down 23.3% flat
44 Algeria 0.0833 2011 down 0.8% rising
45 Zimbabwe 0.0822 2011 down 49.2% rising
46 Lesotho 0.0822 2011 down 27.9% volatile
47 Tunisia 0.0807 2011 up 0.9% rising
48 Rwanda 0.0803 2011 down 28.3% falling
49 Gabon 0.0719 2011 up 9.8% rising
50 Ghana 0.0699 2011 down 27.2% falling
51 Libya 0.0657 2011 down 26.6% rising
52 Angola 0.0648 2011 down 66.5% falling
53 Democratic Republic of Congo 0.0609 2011 down 30.3% falling

Regions and income groups

Aggregates are excluded from the country ranking above so that a region can never outrank a country.

About this data

Indicator
Import product concentration index
Source
UNCTAD Statistical Office, also reported in the UNCTAD Handbook of Statistics, various issues (http://unctadstat.unctad.org/)
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
55 places, 935 data points, 1995–2011
Last refreshed

This indicator reflects the Herfindahl-Hirschmann index measure of the degree of import concentration within a country. The sectoral Hirschmann index is defined as the square root of the sum of the squared shares of exports of each industry in total exports for the region under study. Takes a value between 0 and 1, with 1 indicating that only a single product is exported. Higher values indicate that imports are concentrated in fewer sectors. On the contrary, values closer to 0 reflect a more equal distribution of market shares among importers. Note that this type of concentration indicator tends to be quite vulnerable to cyclical fluctuations in relative-prices, in a way that commodity price rises make commodity importers look more concentrated.