The increase came after a 2 percent decline in March.
That comes after a decline of 3.3 percent in September.
Even after the recent decline, the index is still ahead almost 20 percent.
Soviet arms sales rose after a similar decline in 1983.
Also, school enrollment has increased three percent after a 20-year decline.
Dance may be working its way back into film after a decline that started for the movie musical in the 1950's.
After a steady decline, the building closed in the 1970's.
By then, he said, the price of oil might have slipped lower after a decline in summer demand.
The 2000s had a rise of violent crime after a decline in the 1990s.
After a long decline, enrollment began increasing in 1988, at an average of 3 percent a year.