Title:               Lerner Index in Banking Market for South Africa
Series ID:           DDOI04ZAA066NWDB
Source:              World Bank
Release:             Global Financial Development (Not a Press Release)
Seasonal Adjustment: Not Seasonally Adjusted
Frequency:           Annual
Units:               Index
Date Range:          1996-01-01 to 2013-01-01
Last Updated:        2022-03-23 4:23 PM CDT
Notes:               A measure of market power in the banking market. It compares output
                     pricing and marginal costs (that is, markup). An increase in the
                     Lerner index indicates a deterioration of the competitive conduct of
                     financial intermediaries.
                     
                     A measure of market power in the banking market. It is defined as the
                     difference between output prices and marginal costs (relative to
                     prices). Prices are calculated as total bank revenue over assets,
                     whereas marginal costs are obtained from an estimated translog cost
                     function with respect to output. Higher values of the Lerner index
                     indicate less bank competition. Lerner Index estimations follow the
                     methodology described in Demirgüç-Kunt and Martínez Pería (2010).
                     (Calculated from underlying bank-by-bank data from Bankscope)
                     
                     Source Code: GFDD.OI.04

DATE                      VALUE
1996-01-01  0.06082400000000000
1997-01-01  0.05682600000000000
1998-01-01  0.10141900000000001
1999-01-01  0.22027100000000000
2000-01-01  0.22054800000000000
2001-01-01  0.19883800000000001
2002-01-01  0.30103800000000003
2003-01-01  0.21363100000000000
2004-01-01  0.06118099999999999
2005-01-01  0.13759800000000000
2006-01-01  0.15344100000000002
2007-01-01  0.15917200000000000
2008-01-01  0.13489600000000002
2009-01-01  0.14848100000000000
2010-01-01  0.16841700000000000
2011-01-01  0.20253600000000000
2012-01-01  0.22305200000000000
2013-01-01  0.23339000000000001