As shown in the table below, and as explained further in section E of this chapter, the figures are even higher among adolescents aged 15 to 19. For a summary of these approaches, see Ru2 and others (2005). So far, 45 surveys have been conducted in Latin America. For Lath America, the figure is 21 children per woman. During the 1950s, most countries recorded high fertility levels and a slow rate of change, and fertility even rose in some cases such as Costa Rica and Argentina. In others it remained stable (Uruguay) or dropped slightly, causing a slight rise in the regional average.