data drawn from WDI for the years 2005 (earliest year available) - 2010.
All interaction terms are from centered component variables
For c variable, pre-1973 values are set 1973 value if missing
Exceptions to averaging deaths over conflict years include Rwanda and Nagorno Karabagh.
wbgdp gives federal republic data for Germany. unclear if Czech data refers to Czechoslovakia or only the Czech part.
dropped Germany (ccode = 255) for lack of data, added missing cases for Czechoslovakia to match to cyear2 data
Interstate, CIVIL and extrastate wars, by nation year, when multiple wars then only consider largest (by deaths)
gdpppp95 data for Bosnia/Herzegovina; Bhutan; Brunei; */
data drawn from WDI for the year 2005 (earliest year available).
the countries with no entry cost data are mainly small probably not in service trade data.
KOR designates RKO since 1949
RUS designates SUN between 1949 and 1991
CZE designates CZS between 1949 and 1992
DEU designates FRG between 1949 and 1989