Graphic made by me, using statistics from OECD. A note on the calculation: Total bilateral aid was USD 79.5 billion dollars. Reported tied aid was 41.7 percent, but 42 percent was used for simplicity. If one can assume that the remaining 58 percent is tied aid, and that the tying of aid has a constant loss of value of 30 percent (e.i. the worst case scenario of the OECD), the atrophy equals USD 13.83 billion. Amount of aid affected: USD 46,11 (58 % of total), of which value is redused by 30%.