In 2007, foreign experts working on behalf of the United Nations said that the historically low levels of transparency and continued denial of full investigations to international monitors have reinforced negative perceptions of the Transnistrian government, although recent co-operation by Transnistrian authorities may have reflected a shift in the attitude of Transnistria. Their report stated that the evidence for the illicit production and trafficking of weapons into and from Transnistria, has in the past been exaggerated, although the trafficking of light weapons is likely to have occurred before 2001 (the last year when export data showed US$900,000 worth of 'weapons, munitions, their parts and accessories' exported from Transnistria). The report also states that the same holds true for the production of such weapons, which is likely to have been carried out in the 1990s, primarily to equip Transnistrian forces.