1
http://ourworldindata.org/data/population-growth-vital-statistics/life-expectancy/ and http://www.geoba.se/population.php?pc=world&type=15
2
cf. Maddison, Angus: The World Economy—A Millenial Perspective, Paris 2001
3
http://www.who.int/gho/mortality_burden_disease/life_tables/situation_trends/en/
4
Nestlé CT-ENT Charts Economics and Context ob/tv #4