Claim: Vrin (in one of eleven administration districts) population mainly decreases between 1850 and 2000.
Evidence: 1850 466 1900 366 1950 441 1960 393 1970 333 1980 266 1990 251 2000 249 Surselva Surselva Region is one of the eleven administrative districts in the canton of Graubünden in Switzerland.