It was realized in the 1960s that the economic growth seen in this period was unprecedented. In the long-term view, though, it was just another upswing in the Kondratiev cycle (see figure), much like the mid-Victorian boom or the "Belle Époque" from around 1850 to 1873 in Britain and France, respectively. Globally, agricultural output doubled between the early 1950s and early 1980s—more than that in North America, Western Europe, and East Asia—while the fishing industry tripled its catches. Average life expectancy increased by about seven years between the 1930s and 1960s.