Xochimilco has also traditionally held the Oktoberfest at the Club Alemán, which is located in the borough. In Xochimilco was made film "Sin Azul". Úrsula Murayama appeared in that film as Laura. Since the pre-Hispanic period, Xochimilco's economy has traditionally been based on agriculture, mostly by supplying to the needs of Mexico City. This not only dominated the economy but also the area's religious practices, some of which can still be seen to the present day. Agriculture still remains important in the borough, but most of the focus has shifted to flowers and ornamental plants. One major reason for this is the poor quality of the area's water supply. Xochimilco has four major markets dedicated to the sale of plants and flowers: Cuemanco, Palacio de la Flor, Mercado de Madre Selva and the historic market at San Luis Tlaxialtemalco. Cuemanco is the largest in Xochimilco and the largest of its kind in Latin America, covering thirteen hectares, with its own cactus garden and forms part of the ecological preserve of Cuemanco. The borough produces 2.5 million poinsettias each year, accounting for most of the 3.5 million sold each year in Mexico City. This represents an income for the borough of about 25 to 30 million pesos annually, grown by about 10,000 growers. However, starting in the latter 20th century, most of area's economy has shifted away from agriculture. One reason for this is the deterioration of the area's environment. Plagues and poor planning have gravely affected the conservation area in Xochimilco, to the extent that many fruit trees traditionally grown here have disappeared, including capulins and peaches. Over the last forty years, the percentage of people in the borough working in agriculture has dropped from forty percent to three percent. Xochimilco still has 3,562 units of agricultural production, accounting for 17.7% of the total of the Federal District. These cover 2,741.4 hectares of land or 11.4% of the District. 2741.4 hectares is farmland, with a much smaller amount dedicated to fishing and forestry. Xochimilco accounts for 90.8 percent of the flower production of the District, 76.9% of poinsettias, and all of the geraniums and roses grown here. It also grows about 40% of the District's spinach crop, 24.6 of the figs, 8.7 of pears, 13.2 of pears and 9% of plums.