The strike has cut the nation's output of goods and services by as much as $7 billion.
The current total is equal to more than a third of the nation's output of goods and services last year.
He said that provided a base for continued growth in the output of durable goods.
Gross domestic product measures the total output of goods and services within a country.
The total output of goods and services in 1998, at current prices, exceeded $8.5 trillion.
A country must experience economic growth if it is to produce a greater output of goods and services.
Real economic growth rates can be used to assess the expansion in a country's output of goods and services.
The output of durable goods rose 0.9 percent in December.
The economy has grown - expanding its output of goods and services - every year but one since 1990.
The two measures gauge the total output of goods and services.