The group shows john is weight over 4 years. The x-axis shows the year and the Y-axis represents his weight in kilograms. In 1991, john weight 68 kilograms. In 1992, john is weight went up steadily to 70 kilograms. The next year, john is weight increased dramatically from 70 kilograms to 74 kilograms. In 1994 his weight remained stable at 74 kilograms. The following year there was a slight drop in john is weight to 73 kilograms.