Region	2010	2020	2030	2050	Change 2010 to 2050
World	67.52	64.65	63.03	60.44	-10.49
Japan & Korea	43.36	39.48	35.03	28.2	-34.96
Europe	38.36	34.34	31.92	29.26	-23.74
Southern Africa	69.47	63.87	58.8	55.18	-20.56
Indonesia	57.82	54.91	51.67	47.25	-18.28