chomage <- read.table("https://husson.github.io/livre_exo/chap15_ex8.csv", header = TRUE, sep=";",row.names=1, encoding = "latin1")

library(FactoMineR)
round(cor(chomage),2)
res <- PCA(chomage, quanti.sup=8:14,ind.sup=19:20)
summary(res)