▁made ▁up ▁of ▁foreign ▁national s . ▁ ▁Over ▁the ▁last ▁ 1 0 ▁years ▁the ▁population ▁has ▁decre ased ▁at ▁a ▁rate ▁of ▁- 1 . 8 %. ▁ ▁, ▁the ▁gender ▁distribution ▁of ▁the ▁population ▁was ▁ 5 3 . 1 % ▁male ▁and ▁ 4 6 . 9 % ▁female . ▁ ▁The ▁age ▁distribution , ▁, ▁in ▁Tsch app ina ▁is ; ▁ 2 0 ▁people ▁or ▁ 1 3 . 2 % ▁of ▁the ▁population ▁are ▁between ▁ 0 ▁and ▁ 9 ▁years ▁old . ▁▁ 1 4 ▁people ▁or ▁ 9 . 3 % ▁are ▁ 1 0 ▁to ▁ 1 4 , ▁and ▁ 7 ▁people ▁or ▁ 4 . 6 % ▁are ▁ 1 5 ▁to ▁ 1 9 . ▁ ▁Of ▁the ▁adult ▁population , ▁ 8 ▁people ▁or ▁ 5 . 3 % ▁of ▁the ▁population ▁are ▁between ▁ 2 0 ▁and ▁ 2 9 ▁years ▁old . ▁▁ 2 1 ▁people ▁or ▁ 1 3 . 9 % ▁are ▁ 3 0 ▁to ▁ 3 9 , ▁ 2 4 ▁people ▁or ▁ 1 5 . 9 % ▁are ▁ 4 0 ▁to ▁ 4 9 , ▁and ▁ 2 1 ▁people ▁or ▁ 1 3 . 9 % ▁are ▁ 5 0 ▁to ▁ 5 9 . ▁ ▁The ▁senior ▁population ▁distribution ▁is ▁ 1 5 ▁people ▁or ▁ 9 . 9 % ▁of ▁the ▁population ▁are ▁between ▁ 6 0 ▁and ▁ 6 9 ▁years ▁old , ▁ 1 0