At its first session in 1999 , the Committee recognized that the EDI used in earlier reviews had reflected some elements of vulnerability , but it felt that this reflection was inadequate to cover the Committee 's notion of vulnerability as `` structural vulnerability '' , defined as the risk of being negatively affected by unforeseen events beyond the control of a country . The Committee , therefore , proposed that the former EDI be replaced by an economic vulnerability index ( EVI ) .27 107 .