answers: 2011
context: however, and the incompatibility of lead with catalytic converters, leaded gasoline was phased out in the United States beginning in 1973. By 1995, leaded fuel accounted for only 0.6 percent of total gasoline sales and under 2000 short tons (1814 t) of lead per year. From 1 January 1996, the U.S. Clean Air Act banned the sale of leaded fuel for use in on-road vehicles in the U.S. The use of TEL also necessitated other additives, such as dibromoethane. European countries began replacing lead-containing additives by the end of the 1980s, and by the end of the 1990s, leaded gasoline </s> in 1897. France, Belgium, and Austria banned white lead interior paints in 1909; the League of Nations followed suit in 1922. However, in the United States, laws banning lead house paint were not passed until 1971, and it was phased out and not fully banned until 1978. The 20th century saw an increase in worldwide lead exposure levels due to the increased widespread use of the metal. Beginning in the 1920s, lead was added to gasoline to improve its combustion; lead from this exhaust persists today in soil and dust in buildings. Blood lead levels worldwide have been declining sharply </s> lead out of its gasoline. The success in Egypt provided a model for AID efforts worldwide. By 2000, the TEL industry had moved the major portion of their sales to developing countries whose governments they lobbied against phasing out leaded gasoline. Leaded gasoline was withdrawn entirely from the European Union market on 1 January 2000, although it had been banned much earlier in most member states. Other countries also phased out TEL. India banned leaded petrol in March 2000. By 2011, the United Nations announced that it had been successful in phasing out leaded gasoline worldwide. "Ridding the world of
question: when did they take lead out of gas