date,psavert
1967-07-01,12.6
1967-08-01,12.6
1967-09-01,11.9
1967-10-01,12.9
1967-11-01,12.8
1967-12-01,11.8
1968-01-01,11.7
1968-02-01,12.3
1968-03-01,11.7
1968-04-01,12.3
1968-05-01,12
1968-06-01,11.7
1968-07-01,10.7
1968-08-01,10.5
1968-09-01,10.6
1968-10-01,10.8
1968-11-01,10.6
1968-12-01,11.1
1969-01-01,10.3
1969-02-01,9.7
1969-03-01,10.2
1969-04-01,9.7
1969-05-01,10.1
1969-06-01,11.1
1969-07-01,11.8
1969-08-01,11.5
1969-09-01,11.6
1969-10-01,11.4
1969-11-01,11.6
1969-12-01,11.8
1970-01-01,11.8
1970-02-01,11.7
1970-03-01,12.4
1970-04-01,13.3
1970-05-01,12.4
1970-06-01,12.3
1970-07-01,13.5
1970-08-01,13.4
1970-09-01,12.9
1970-10-01,13.1
1970-11-01,13.6
1970-12-01,13.2
1971-01-01,13.3
1971-02-01,13.3
1971-03-01,13.5
1971-04-01,13.2
1971-05-01,13.6
1971-06-01,14.7
1971-07-01,13.8
1971-08-01,13.6
1971-09-01,13.3
1971-10-01,13.3
1971-11-01,13.1
1971-12-01,13
1972-01-01,12.5
1972-02-01,12.8
1972-03-01,11.8
1972-04-01,11.5
1972-05-01,11.7
1972-06-01,11.7
1972-07-01,11.7
1972-08-01,12
1972-09-01,12.2
1972-10-01,13
1972-11-01,13.6
1972-12-01,13.7
1973-01-01,12.4
1973-02-01,12.5
1973-03-01,12.7
1973-04-01,13.2
1973-05-01,13.2
1973-06-01,13.6
1973-07-01,13.2
1973-08-01,13.9
1973-09-01,13.1
1973-10-01,14.4
1973-11-01,14.4
1973-12-01,14.8
1974-01-01,14.3
1974-02-01,14.2
1974-03-01,13.4
1974-04-01,13.1
1974-05-01,12.8
1974-06-01,12.8
1974-07-01,12.8
1974-08-01,12.1
1974-09-01,12.9
1974-10-01,13.4
1974-11-01,13.8
1974-12-01,14
1975-01-01,13.2
1975-02-01,12.5
1975-03-01,12.7
1975-04-01,14.2
1975-05-01,17.3
1975-06-01,14.3
1975-07-01,12.6
1975-08-01,13
1975-09-01,13
1975-10-01,13.4
1975-11-01,12.7
1975-12-01,12