{"success":true,"start_year":2020,"end_year":2024,"start_cpi":100.0,"end_cpi":114.2,"percentage":14.2,"ratio":1.142,"calculation":"((114.2 - 100.0) / 100.0) * 100","source":{"name":"소비자물가지수","organization":"한국은행","system":"경제통계시스템(ECOS)","url":"https://ecos.bok.or.kr","description":"2020년 기준 소비자물가지수 (연평균)"}}