Influence of locusts on the German economy

The German private equity association BVK and PwC published a study about how companies performed if they are PE-backed.There are 5.500 PE and VC financed companies in Germany, accounting for 5,2% of GDP, not bad. Growth-rates are also significant: 10% pa on average over  the whole sample (No Cagr?)

What I’d like to know is how much of a survivorship bias is built into these figures – per definition this survey only looked at those companies that remained active since the survey was last carried out in 2001… Odd picture for the title as well – are we replacing the infamous locusts with an ice-breaker steaming through the German pack-ice?