fast. As U can read that only one of them came from a mountainous region in india. Suppressed by propaganda, actually quite a number of those exiles in inda have returned to china. U're talking about a 4.5 to 5 times difference in GDP/capita (xcept the few on CIA payroll,like the senior lamas). They arent stupid.
Tibet is mostly a high land desert, doubt one can readily find swimming pool. Native tibetans I heard seldom bathe. The old saying is the average tibetans only bathe 3 times during their life time, immediately after birth,wedding nite and post mortem