kondratieff waves

Here comes K20 all you Kondratieff fans. see https://faculty.washington.edu/modelski/IPEKTAB.htm

KONDRATIEFF WAVES (or, for short, K-waves) may be defined as a pattern of regularity characteristic of structural change in the modern world economy. Some 60 years in length, it consists of an alternation of periods of high sectoral growth with others, start-up periods of slower growth. The study of this pattern helps to trace the evolution of the global economy, and aids in politico-economic prediction.

for the full text go to https://faculty.washington.edu/modelski/IPEKWAVE.html