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 years older is the average age of a Roman resident compared to the Italian average?