1965


                                    16.894


                                    17.108


                                    12.776


                                     2.551



                                     1966


                                    19.044


                                    19.777


                                    13.084


                                     3.059



                                     1967


                                    21.233


                                    21.462


                                    13.107


                                     3.290



                                     1968


                                    20.799


                                    20.458


                                    12.808


                                     3.343



                                     1969


                                    16.324


                                    17.114


                                    10.229


                                     2.576



                                     1970


                                    17.949


                                    16.431


                                    11.598


                                     2.330



                                     1971