Table 1: Historical values of the main status variables (data is from 2010-2015 Statistical Yearbook of Beijing).

Time200920102011201220132014

Amount of motor vehicles401.9480.9498.3520.0543.7559.1
(10,000 vehicles)
Amount of population1,860.01,961.92,018.62,069.32,114.82,151.6
(10,000 persons)
GDP gross12,153.014,113.616,251.917,879.419,800.821,330.8
(100 million yuan)