Turkey Total Investment, % of GDP. Units: Percent of GDP. Multiplier: . Estimates begin after 2015 . This data is sourced from www.opendataforafrica.org where it is offered under an open data licence (www.opendataforafrica.org/legal/termsofuse). Expressed as a ratio of total investment in current local currency and GDP in current local currency. Investment or gross capital formation is measured by the total value of the gross fixed capital formation and changes in inventories and acquisitions less disposals of valuables for a unit or sector. [SNA 1993] Source: Haver Analytics. Formally, the Turkish Statistical Institute (TurkStat) Latest actual data: 2015. For quarterly data, latest actual is 2016Q1. National accounts manual used: European System of Accounts (ESA) 1995. Series prior to 1998 were not revised according to ESA 1995. GDP valuation: Market prices Start/end months of reporting year: January/December Base year: 1998 Chain-weighted: No Primary domestic currency: Turkish lira Data last updated: 09/2016.