agriculture GDP on agriculture, hunting, forestry, fishing (ISIC A-B, x1)
manufacture GDP on mining, manufacturing, utilities (ISIC C-E, x2)
construction GDP on construction (ISIC F, x3)
wholesales GDP on wholesale, retail trade, restaurants and hotels (ISIC G-H, x4)
transport GDP on transport, storage and communication (ISIC I, x5)
other GDP on other activities (ISIC J-P, x6)
lifeExpMen life expectancy for men and women
lifeExpWomen life expectancy for men and women
References
K. Hron, P. Filzmoser, K. Thompson (2012). Linear regression with compositional explanatory variables. Journal of Applied Statistics, Volume 39, Issue 5, 2012.