Montreal Protocol undeveloped to developed nations, the overall level of compliance has been high. Statistical analysis from 2010 show a clear positive signal from the Montreal Protocol to the stratospheric ozone. In consequence, the Montreal Protocol has often been called the most successful international environmental agreement to date. In a 2001 report, NASA found the ozone thinning over Antarctica had remained the same thickness for the previous three years, however in 2003 the ozone hole grew to its second largest size. The most recent (2006) scientific evaluation of the effects of the Montreal Protocol states, "The Montreal Protocol is working: There is
UNEP OzonAction Multilateral Fund for the Implementation of the Montreal Protocol was set up. The Fund's "main objective is to assist developing country parties to the Montreal Protocol whose annual per capita consumption and production of ozone-depleting substances is less than 0.3 kg to comply with the control measures of the Protocol". UNEP’s OzonAction branch is one of the Fund’s implementing agencies, along with others, such as UNIDO, UNDP and the World Bank. Official website UNEP OzonAction OzonAction is a branch of the United Nations Environment Programme (UNEP) which has its main office in Paris, and is part of UNEP's Division of