Task: Question Answering
Input (English): Passage: According to Stats Canada, the population of Kensington Market increased by approximately 300 people (or 7%) from 3,740 in 2006 to 4,029 in 2011. Breaking this number down into generation status, it has been found that first generation residents increased by 75 and second generation residents increased by 20. The remaining 200 or so residents of the area are placed in the third generation or more category. Thus, the number of third generation or more residents increased significantly from 2006 to 2011. In terms of percentages, from 2006 to 2011, first generation residents dropped about 7% from 64.92% to 57.73%. Second generation residents decreased slightly from 19.04% in 2006 to 16.88% in 2011 while the percentage of third generation or more residents increased dramatically from 16.04% in 2006 to 25.39% in 2011, which represents approximately a 10% increase in residents from this generation status. (Census/NHS 2011, Census 2006). 
Question: How many years did it take for first generation residents to drop 7%? 
Answer type: Number 
Output (English): 5.