Tunisia | Import product concentration index

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.
Publisher
The World Bank
Origin
Tunisian Republic
Records
53
Source
Tunisia | Import product concentration index
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
0.07518412 1995
0.07886434 1996
0.0760144 1997
0.07782494 1998
0.0771801 1999
0.07762806 2000
0.08003075 2001
0.08046378 2002
0.08526927 2003
0.08168955 2004
0.08682954 2005
0.08845144 2006
0.07833215 2007
0.09316012 2008
0.06768008 2009
0.08047405 2010
0.0807465 2011
2012

Tunisia | Import product concentration index

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.
Publisher
The World Bank
Origin
Tunisian Republic
Records
53
Source