I want to take a table that looks like this...

Beg-year End-year Details
1975 1979 blah,blah,blah
1981 1984 yak, yak, yak

and turn it into this...

Year Details
1975 blah,blah,blah
1976 blah,blah,blah
1977 blah,blah,blah
1978 blah,blah,blah
1979 blah,blah,blah
1981 yak, yak, yak
1982 yak, yak, yak
1983 yak, yak, yak
1984 yak, yak, yak

Is this possible? Please advise.

THanks.