63.966

7.957



                                     1967

78.986

11.143



                                     1968

87.938

9.309



                                     1969

88.668

13.378



                                     1970

101.583

9.498



                                     1971

136.183

13.330



                                     1972

112.760

13.084



                                     1973

51.551

7.283



                                     1974

51.164

5.520



                                     1975

51.403

6.603



                                     1976

46.076

7.066



                                     1977

44.521

8.113



                                     1978

43.848

8.535