Table 2.

Prevalence of dementia (thousands) for world regions and specific countries, 2010–2050

Area/country	2010	2015	2020	2025	2030	2035	2040	2045	2050
World	40,121	46,780	54,266	63,454	74,689	87,880	102,151	116,778	131,454
High-Income countries	17,028	19,502	21,965	24,733	27,951	31,716	35,706	39,143	42,177
Other	23,093	27,278	32,301	38,721	46,738	56,164	66,445	77,636	89,278
China	8,146	9,518	11,118	13,322	16,184	19,358	22,290	25,132	27,856
Canada	483	556	639	748	886	1,056	1,221	1,349	1,452
USA	3,760	4,227	4,778	5,468	6,397	7,513	8,661	9,597	10,285

Notes: High Income: Countries classified by the World Bank as having 2015 per capita GNI of $12,476 or more. Venezuela and Equatorial Guinea are classified as High Income in 2015 but as Middle income in 2016 (Table 1). Other: Sum of Low Income and Middle Income countries. Source: Alzheimer’s Disease International, 2015. World Alzheimer Report 2015, p. 8, plus special tabulations obtained from, Maëlenn Guerchet of the Center for Global Mental Health at King’s College London on 23 April 2018 and 17 May 2018.