{"entity":{"iso2":null,"iso3":null,"name":"USSR","slug":"ussr"},"indicator":{"licence":"Derived by Statizoid from the sources named on the page","slug":"maize-corn-yield-annual-growth-rate","source":"Statizoid (derived)","source_url":null,"title":"Maize (corn) \u2014 Yield, annual growth rate","unit":"% change on previous year"},"observations":[{"date":"1962-01-01","value":-7.77003},{"date":"1963-01-01","value":-27.8859},{"date":"1964-01-01","value":70.0},{"date":"1965-01-01","value":-6.66888},{"date":"1966-01-01","value":3.12166},{"date":"1967-01-01","value":0.878606},{"date":"1968-01-01","value":0.224394},{"date":"1969-01-01","value":8.86081},{"date":"1970-01-01","value":-1.98348},{"date":"1971-01-01","value":-8.24027},{"date":"1972-01-01","value":-5.03856},{"date":"1973-01-01","value":25.2724},{"date":"1974-01-01","value":-0.289968},{"date":"1975-01-01","value":-9.71115},{"date":"1976-01-01","value":11.0777},{"date":"1977-01-01","value":6.60085},{"date":"1978-01-01","value":8.50882},{"date":"1979-01-01","value":-11.4385},{"date":"1980-01-01","value":1.22448},{"date":"1981-01-01","value":-16.4232},{"date":"1982-01-01","value":32.9925},{"date":"1983-01-01","value":-3.50237},{"date":"1984-01-01","value":1.4559},{"date":"1985-01-01","value":-7.19524},{"date":"1986-01-01","value":-8.06421},{"date":"1987-01-01","value":9.58037},{"date":"1988-01-01","value":11.7229},{"date":"1989-01-01","value":2.68403},{"date":"1990-01-01","value":-6.22375},{"date":"1991-01-01","value":-5.45987}],"summary":{"latest_period":"1991-01-01","latest_value":-5.45987,"max":70.0,"mean":2.277,"min":-27.8859,"of":181,"rank":135,"trend":"volatile"}}