... percent The value of the 2014 quantities at 2015 prices is $8,000 The value of the 2015 quantities at 2015 prices is $9,400 We now compare these values The increase in the value is $1,400 The percentage... at the dating of the cycle in other countries This dating is done by the Economic Cycle Research Institute (ECRI) You can find their Web site at http://www.businesscycle.com/ Another page on the. .. First, the real GDP of one country must be converted into the same currency unit as the real GDP of the other country Second, the goods and services in both countries must be valued at the same