Geographical Age of a Woman

Geographical Age of a Woman (or Sexual Age of a Woman)

At 20-29 years she is like Africa, half-explored
At 30-39 years she is like India, warm, luxuriant and mysterious
At 40-49 years she is like America, technically perfect
At 50-59 years she is like Europe, all in ruin
At 60-69 years she is like Siberia, everyone knows where she is, but no one wants to go there.