Replication data for "A Comparative Study of GDP and Industrial Production in Indonesia's Natural Rubber Trade: Evidence From Japan"

This deposit contains the datasets underlying the econometric analysis in "A Comparative Study of GDP and Industrial Production in Indonesia's Natural Rubber Trade: Evidence From Japan," which examines whether destination-market industrial production provides a better demand proxy than gross domestic product for Indonesian natural rubber exports to Japan. The deposit includes both quarterly and monthly samples in comma-separated (CSV) and Excel formats, accompanied by a README documenting each variable and its corresponding source series. The quarterly dataset contains 40 observations covering January 2014 to December 2023, comprising Japanese real gross domestic product, the Japanese industrial production index, the world natural rubber price, Indonesia's real effective exchange rate, and Indonesian export volume of technically specified natural rubber (HS 400122) to Japan. The monthly dataset contains 120 observations over the same period and includes the same variables, excluding gross domestic product, which is not available at monthly frequency. All variables are reported in their original published units rather than logarithmically transformed values. To reproduce the econometric results presented in the paper, users must apply base-10 logarithmic transformations and re-estimate the models. Export volume data were obtained from the export-import statistics portal of Badan Pusat Statistik (BPS). The remaining series were retrieved from the Federal Reserve Economic Data (FRED) service of the Federal Reserve Bank of St. Louis, including the OECD consumer price-based real effective exchange rate measures for Indonesia (CCRETT01IDQ661N for quarterly data and CCRETT01IDM661N for monthly data). All source materials consist of published official statistics. Some underlying series are subject to third-party copyright and should be appropriately acknowledged when reused, particularly those originating from the Cabinet Office of Japan, the International Monetary Fund (IMF), and the OECD. None of the deposited materials is confidential.