According to a study by Ilyana Kuziemko and Eric Werker, there is a strong connection between the distribution of foreign aid payments and rotating membership of the United Nations Security Council. Regarding the US foreign aid expenditure, ODA (Official Development Assistance)—receiving countries which hold a rotating seat of the UNSC experience on average a rise of 59% in payments ($16 million); concerning financial support from the United Nations, an increase of 8% ($1 million) is being detected. This rise in payments does however not apply the whole time: Kuziemko and Werker used a "New York Times"-Index to differentiate between important and unimportant years. The more the UN and the UNSC were mentioned in "The New York Times", the more important the year was considered. The Korean War in the early 1950s, the Congo War in the early 1960s, and the numerous peacekeeping missions in the 1990s were decisive events. During unimportant and medium important years, ODA-receiving countries with a seat in the UNSC did not experience a significant rise in aid payments. During important years however, an increase of 170% could be detected ($16 million more). Regarding UN payments, the difference also exists, but is not as high (53% more financial support or $8 million during important years). One of the reasons could be that it is easier for the US to quickly distribute money, while aid payments of the United Nations mean a lot of bureaucracy beforehand.