1[2 {"id":"C1","text":"Over 2001-01..2026-09, 308 months have a computable 12-month CPI growth rate; 2025-10 is missing because the 2026-10-28 vintage reports no index level for that month.","results_keys":["n_months_growth","n_months_missing_growth","missing_growth_months","feasibility","feasibility_reason"],"status":"supported","caveat":"No imputation, per task rules."},3 {"id":"C2","text":"The mean 12-month growth over the window is 2.574%, with 2.361% in 2001-2013 and 2.793% in 2014-2026-09.","results_keys":["mean_growth_12m","mean_growth_12m_2001_2013","mean_growth_12m_2014_2026"],"status":"supported","caveat":"Pre-2014 levels are from the 2016-07-15 vintage; 2014 growth rates mix vintages."},4 {"id":"C3","text":"The maximum 12-month growth is 8.979% in 2022-06 and the minimum is -1.959% in 2009-07.","results_keys":["max_growth_12m","max_growth_month","min_growth_12m","min_growth_month"],"status":"supported","caveat":""},5 {"id":"C4","text":"Growth in the named months: 2014-06 2.098%, 2016-07 0.868%, 2020-05 0.198%, 2022-06 8.979%, 2026-09 3.717%.","results_keys":["growth_2014_06","growth_2016_07","growth_2020_05","growth_2022_06","growth_2026_09"],"status":"supported","caveat":"growth_2014_06 is a cross-vintage ratio."},6 {"id":"C5","text":"The hand-assembled file contains assembly errors (old vintage in overlap, dropped 2016-07 with a one-month shift thereafter) and was not used for computation.","results_keys":["data_issues"],"status":"supported","caveat":""}7]8