Of course, growth was faster during some periods-the 1950s and 1960s, and the second half of the 1990s-and slower during other periods-the 1970s.
Growth has continued to slow.
mnli hypothesis: Growth has continued to slow. premise: Of course, growth was faster during some periods-the 1950s and 1960s, and the second half of the 1990s-and slower during other periods-the 1970s.