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Complete the text with the appropriate form of the verb in brackets?
our country is going through a period of accelerating change.today there (be)__ around 3.7 million people aged over 60 in this country but the large numbers of people who (belong)___ to the baby-boom generation(produce)__ an explosion in the number of elderly people from around 2011.by 2030 there (be)__ some 8.8 million and because the birth-rate in the period after post-war baby boom(decline)__ sharply these elderly people(represent)__ a much larger share of the country's population than ever before in our history.in 1966 when we (introduce)__our national pension scheme there (be)__ about eight working-age people for every retired person,whereas today there (be)___ about five and in 2030 there (be)__ another dramatic change which also(affect)___ this situation as thanks to medical advances and higher living standarts,life expectancy (increase)__and (continue)___ ti increase in future years.today people can expect to live three years longer than in 1966.by 2030 they (live)___ an average of 4.5 years longer