tr 73.000 12.000 2 O 54,000 9,000 22 , 000 ; 20,000 12,000 15,000 s v B 35,000 10,000 8,000 1,500 5,000 15.000 13.000 8,000 12,000 10,000 4.000 6.000 1,8006,000