"At the moment, the world's population is 6.7 billion and 750m people are born each year. Though the rate of increase is declining, inertia means the total will go on rising until 2050, when Ethiopia, for example, 18m children are born every year, rising to 24m a year by 2040. That will double its population by 80m to 160m."

"The term world population commonly refers to the total number of living humans on Earth at a given time. As of 21 July 2009 (UTC), the Earth's population is estimated by the United States Census Bureau to be 6.772 billion. The world population has been growing continuously since the end of the Black Death around 1400. There were also short term falls at other times due to plague, for example in the mid 17th century. The fastest rates of world population growth (above 1.8%) were seen briefly during the 1950s then for a longer period during the 1960s and 1970s (see graph). According to population projections, world population will continue to grow until around 2050. The 2008 rate of growth has almost halved since its peak of 2.2% per year, which was reached in 1963. World births have leveled off at about 134-million-per-year, since their peak at 163-million in the late 1990s, and are expected to remain constant. However, deaths are only around 57 million per year, and are expected to increase to 90 million by the year 2050. Since births outnumber deaths, the world's population is expected to reach about 9 billion by the year 2040."

The increase of population will increase the demand.

Source: The Economist July 4th 2009 pg 58. Article "Whatever happened to the food crisis."

Source:"World's Population Increasing" is a difficult qualitative factor to defend, so competing institutions will have an easy time overcoming it.