Title:               Lerner Index in Banking Market for Jamaica
Series ID:           DDOI04JMA066NWDB
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 2010-01-01
Last Updated:        2022-03-23 4:28 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  -0.017759999999999998
1997-01-01   0.038252000000000000
1998-01-01   0.038252000000000000
1999-01-01   0.038252000000000000
2000-01-01   0.252142000000000030
2001-01-01   0.358075000000000000
2002-01-01   0.231848999999999970
2003-01-01   0.252617000000000000
2004-01-01   0.305179000000000000
2005-01-01   0.309519000000000000
2006-01-01   0.332601000000000040
2007-01-01   0.334563000000000000
2008-01-01   0.335056000000000000
2009-01-01   0.357491000000000000
2010-01-01   0.403532000000000000