How many years of glass blowing history did Chihuly break with in 1977?

Starting in 1977, Chihuly spent the next fifteen years single-mindedly developing about a dozen new series, such as Baskets, Seaforms, Macchia, and Persians, that apply his asymmetrical mode of glassblowing. Many artists would have made an entire career out of just one of these vessel-based series.

Too plenty can't figure it out