紧急求助哈！！！

哪位大侠用过pwt80数据库啊？这些指标

rgdpna	Real GDP at constant 2005 national prices (in mil. 2005US$)
rkna	Capital stock at constant 2005 national prices (in mil. 2005US$)

它们的计价单位是用本国货币还是2005年美元啊？
这些数据是否还需要用以下指标去换算啊？

xr—Exchange rate, national currency/USD (market+estimated)

pl—gdpe Price level of CGDPe (PPP/XR), price level of USA GDPo in 2005=1

pl—gdpo Price level of CGDPo (PPP/XR),  price level of USA GDPo in 2005=1

先谢谢各位大侠了哈！！！