End-user revenue per average interstate conversation minute

The graph depicts the end-user revenue per average interstate domestic conversation minute in the United States from 1999 to 2008. In 1999, end-user revenue per average interstate domestic conversation minute was 11 U.S. cents.该图表描绘了1999年至2008年美国平均州际国内通话每分钟的用户收入。在1999年，平均州际国内通话每分钟的终端用户收入为11美分。