[{"Year":1947,"2-Year Impact":0.57},{"Year":1948,"2-Year Impact":1.06},{"Year":1949,"2-Year Impact":0.64},{"Year":1950,"2-Year Impact":0.64},{"Year":1951,"2-Year Impact":0.85},{"Year":1952,"2-Year Impact":0.66},{"Year":1953,"2-Year Impact":0.75},{"Year":1954,"2-Year Impact":0.88},{"Year":1955,"2-Year Impact":1.06},{"Year":1956,"2-Year Impact":0.98},{"Year":1957,"2-Year Impact":0.75},{"Year":1958,"2-Year Impact":1.01},{"Year":1959,"2-Year Impact":1.00},{"Year":1960,"2-Year Impact":1.05},{"Year":1961,"2-Year Impact":0.84},{"Year":1962,"2-Year Impact":0.90},{"Year":1963,"2-Year Impact":0.88},{"Year":1964,"2-Year Impact":1.35}]