GS - One large drawdown can quickly erase returns that were accumulated over several years

Goldman Sachs:   "since the 1950s most equity markets had several large drawdowns of more than 20%, which have taken several years to recover from. For example in the 1970s the FTSE All-Share had an 80% drawdown in real terms and the DAX declined 69% during the Tech Bubble. One of the largest equity drawdowns across markets was during the GFC, when most global equity markets lost around half their value. And not to forget, the TOPIX has still not recovered from the large drawdowns of the late1980s/early 1990s."