Possible Clues:

• The teenage years
• A party with 100 in the French place -- part of growing up
• Youth caught in a benefit environment
• Period of strong growth does cancel out decline in the end
• Period before adulthood
• Youth after a benefit setting about head of careers
• Youthful period sadly ceased once around 50
• Teenage years
• Youthfulness
• Youth in case once led astray