Based on earthquake statistics from the past 10 years, there are more than 1,000 tremors per day around the world. Quakes of magnitudes 2-3 are usually not felt by people and have to be detected with the help of special equipment. Stronger earthquakes of magnitude 5 or more can cause damage to buildings if the area struck is well populated. On average, earthquakes of magnitudes 5.0-5.9 occur 1,500 times a year, 6.0-6.9 150 times a year, 7.0-7.9 15 times a year, and 8.0 or more once a year. The data we have today does not indicate that earthquakes are increasing in frequency.