The Zambian currency is the kwacha, K (international currency code ZMW), which is equivalent to 100 ngwee. Zambian banknotes are in denominations of K100, 50, 20, 10, 5 and 2. Coins are in denominations of K1 and 50, 10 and 5 ngwee.
Blessed with 3 major rivers, several substantial tributaries, and many smaller rivers, as well as vast natural lakes and the enormous Kariba dam, Zambia is one of the most water rich countries in Africa. The source of the Zambezi is in northwest Zambia and runs through the Barotse Floodplains until it forms the border with Zimbabwe.
According to Population Pyramid of the World the total population of Zambia is 15 519 000 in 2015, compared to only 2 340 000 in 1950. The proportion of children below the age of 15 in 2010 was 46.4%, 50.6% was between 15 and 65 years of age, while 3.1% was 65 years or older.