Indeed, much of the increase in LDC exports in recent years is attributable to rising prices rather than to higher export volumes (UNCTAD 2012). Source: WITS, available at: http://wits.worldbank.org/about_wits.html (accessed May 2013). For a country specialising in manufactures (e.g. Bangladesh), diversification should entail a broadening of the export base (export at the extensive margin), beyond the products currently being exported.