Pooled regressions first of 8 and then of 16 countries show a steady and robust process of endogenous growth since 1870, interrupted only by the events of World War II and the impact of convergence towards US levels of performance in the 1950s and the 1960s. This result contrasts with that of Maurice Scott, who finds that growth accelerated after the second world war. Catching up is no longer relevant in the 70s and the 80s of this century, despite a still existing gap in productivity levels vis a vis the US. It was neither relevant in the pre-WW II era. Growth is therefore characterized by the device "back to normal". Even so, a few countries underperform in terms of economic growth.