1970s: The population of Botswana in 1971 is 630,000 plus approximately 11,000 nomads.
1990s: The population of Botswana in 1999 is 1,464,167.
1960s: The average life expectancy in 1966 is 50 years.
1990s: The average life expectancy in 1996 is almost 67 years.
1960s and 1970s: In 1969, diamonds are discovered in Botswana at Orapa. Mining begins two years later. Between 1970 and 1973, the value of Botswana's exports rose from thirteen million rand to forty-three million rand. (The rand is the unit of currency in Botswana. A rand is roughly equivalent to a dollar.) This increase is due primarily to the beef and diamond industries.
1990s: In 1996, Botswana is Africa's third-largest mineral producer. By 1997, diamonds account for about 70 percent of Botswana's exports, more than 45 percent of government revenue, and some 30.....
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