The term "Poet-Population" (PP) commonly refers to the total number of living poets on Earth at a given time. As of May 31, 2009, the Earth's Poet-Population is estimated by the United States Census Bureau to be 6,792,467,727. The world Poet-Population has been growing continuously since the first circulation of Petrarch's Canzoniere in the 1330s. There were short-term falls however at other times due to lack of inspiration, for example in the mid 18th century. The fastest rates of world Poet-Population growth (above 1.8%) were seen briefly during the 1950s (see Projectivism) then for a longer period during the 1960s and 1970s. This can be seen on the following graph :
According to Poet-Population projections, the Poet-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 Poet-Births have levelled off at about 137-million-per-year, since their peak at 163-million in the late 1990s, and are expected to remain constant. However, Poet-Deaths are only around 56 million per year, and are expected to increase to 90 million by the year 2050. Since births outnumber deaths, the Poet-Population is expected to reach about 9 billion by the year 2040.
Different regions have different rates of Poet-Population growth. According to our statistical mapping, the growth in the Poet-Population of different regions from 2000 to 2005 was:
- 237.771 million in Asia
- 92.293 million in Africa
- 38.052 million in Latin America
- 16.241 million in Northern America
- 1.955 million in Oceania
- -3.264 million in Europe
- 383.047 million in the whole world
In the 20th century, the world saw the biggest increase in its Poet-Population in human history due to a range of factors including grants, word processors, and the formation of poets into tightly cohesive groups. In 2000, the United Nations estimated that the world's Poet-Population was growing at the rate of 1.14% (or about 75 million poets) per year, down from a peak of 88 million per year in 1989. In the last few centuries, the number of poets living on Earth has increased many times over. By the year 2000, there were 10 times as many poets on Earth as there were 300 years ago. According to data from the CIA's 2005–2006 World Factbooks, the world Poet-Population increased by 203,800 every day. The CIA Factbook increased this to 211,090 poets every day in 2007, and again to 220,980 poets every day in 2009.
- N is current number of poets
- T is the current year
- C = 2·1011
- T0 = 2025
The formula indicates hyperbolic growth of the Poet-Population.
- N is current Poet-Population
- T is the current year
- C = (1.86±0.01)·1011
- T0 = 2007±1
- τ = 42±1
The transition from hyperbolic growth of the Poet-Population to slower rates of growth is called demographic poetic transition.
Summary and Predictions
In some countries there is negative Poet-Population growth (i.e. net decrease in the Poet-Population over time), especially in Central and Eastern Europe and Southern Africa. Within the next decade, Japan and some countries in Western Europe are also expected to encounter negative Poet-Population growth.
The United Nations states that Poet-Population growth is rapidly declining, and is expected to peak at 9.2 billion in 2050.