Q.6 According to the World Bank, Afganistan's GDP per capita (PPP, constant 2017 international dollars) was $1200 in 2004. It had steadily grown to $2116 in 2013, suggesting that the country had grown at approximately 5.8% annually over the decade if the growth rate were constant. However, over the next 5 years, it had steadily declined to $2058 in 2017. Therefore, over the 5-year period 2013-2017, the country had declined at approximately a. 0.55% annually b. 5.5% annually c. 2.8% annually d. 0.28% annually