Population Aging Is Occurring World - Tradução em português

Population aging is occurring worldwide

Over the past half-century,both the worldwide drop in fertility and concurrent rise in life expentancy have led to the gradual aging of the world´s population.
Since 1950,the share of persons ages 65 and older has risen from 5 percent to 7 percent worldwide.As the map shows,with North America,Australia,and New Zealand close behind.
However,older persons are now more than 5 percent of the inhabitants in many developing countries and by 2050 are expected to be 19 percent of Latin America´s population and 18 percent of Asia´s.

Bom,se possivel,eu queria que fizesse uma lista de tradução depois de traduzir o texto em si destas palavras:
Worldwide
Half-Century
Concurrent
Expentancy
´´HAVE LED´´
Gradual Aging
´´Led the way´´
´´Close behind´´
developing Countries

Obrigado,aguardo a tradução do texto e das palavras acima