In mid-2010, there were 2,754,440 residents in the city proper, while some 4.2 million people lived in the greater Rome area (which can be approximately identified with its administrative metropolitan city, with a population density of about 800 inhab./km² stretching over more than 5,000 km²). Minors (children ages 18 and younger) totalled 17.00% of the population compared to pensioners who number 20.76%. This compares with the Italian average of 18.06% (minors) and 19.94% (pensioners). The average age of a Roman resident is 43 compared to the Italian average of 42. In the five years between 2002 and 2007, the population of Rome grew by 6.54%, while Italy as a whole grew by 3.56%. The current birth rate of Rome is 9.10 births per 1,000 inhabitants compared to the Italian average of 9.45 births.. How many percentage points more in population are pensioners compared to minors under the age of 18?