Peak industrial growth was achieved in 1973, when the manufacturing sector grew by 15.8 percent. In 1999 the industrial sector accounted for 31.7 percent of the total gross domestic product, decreasing from 40.6 percent in 1979. The average annual industrial growth rate was 2.3 percent during 1979-1989, and 2.1 percent during 1989-1999. Industrial growth decreased 1.3 and 1.7 percent in 1998 and 1999, respectively; however, industry grew by 6.5 percent by the end of 2000. The industries that developed most in the year 2000 were the automobile (18.9 percent), parts and machinery (18 percent), mining (11.9 percent), electrical and communications (11.9 percent), and metal processing (7.6 percent) industries. Industry in Brazil employed 27 percent of the work-force. Industrial products included iron and steel, automobiles, petroleum, chemicals, and cement.