Economic growth, peaks, economic downturns, and troughs are part of the net exports economic cycle intermediate goods

Economic growth, peaks, economic downturns, and troughs are part of the economic cycle.
The economic cycle is the expansion or growth  and contraction or recession
of the economy. This is a natural fluctuation of economy. There are factors that determine the current economic cycle of a country. This includes: GDP, interest rates, levels of employment and consumer spending.

The best answer here is: economic cycle.

The economic cycle is the change of the economic activity, both a positive and a negative change (the positive is the growth and the negative is the downturn) as measured by the country's GDP.

It has another name:  a business cycle.