Income per person was by year 1999 roughly equal to the world average. According to the Andean Community, GDP per capita was US$1,487 in 1993, and rose to US$2,090 by 1995. The CIA's World Factbook estimates income per capita for 1999 at US$6,200.
The average surface temperature on Earth is approximately 14Â°C; but as already noted, this varies. For instance, the hottest temperature ever recorded on Earth was 70.7Â°C (159Â°F), which was taken in the Lut Desert of Iran.
Despite the overall increase, global temperatures have not climbed steadily during the decades. The average global annual temperature hovered around 13.7 Â°C (56.7 Â°F) from the 1880s through the 1910s. During the 1920s to 1940s, temperatures climbed about 0.1 Â°C (0.18 Â°F) each decade. Mean global temperatures then stabilized at roughly 14.0Â°C (57.2 Â°F) until the 1980s.