Art prices were relatively stable between the two world wars, but they began to rise in the 1950s. Prices for Pablo Picasso's works were thirty seven times higher in 1969 than in 1951, and prices for Marc Chagall's works rose fiftyfold over that period. The increase in the price of art was especially dramatic after 1983, with prices peaking between 1987 and 1990 and then falling somewhat after 1990. Picasso's Yo Picasso sold at auction in 1989 for $47.9 million, twice the pre-auction estimate and eight times what it sold for in 1981. Jasper Johns' False Start sold in 1960 for $3,150; in 1988, it brought $17.5 million at auction. From 1975 until the late 1 980s, works by the following artists recorded these price increases: Jackson Pollock, 750 percent; Pierre-Auguste Renoir, 490 percent; Claude Monet, 440 percent; Edgar Degas, 350 percent; Camille Pissarro, 220 percent; and Alfred Sisley, 220 percent. Even works by more obscure painters have skyrocketed: from 1975 to 1988, prices for watercolors by English artist Thomas Girtin increased by 310 percent, prices for paintings by Swedish artist Bruno Liljefors rose by 340 percent, and prices for works by Scotland's J. D. Fergusson appreciated by 460 percent.-- John E. Conklin, Art and Crime, (Praeger Publishers, 1994).