Monthly Millions Of Passenger Car-Miles
1920-01-01 187.200
1920-02-01 171.600
1920-03-01 185.900
1920-04-01 182.200
1920-05-01 192.300
1920-06-01 198.000
1920-07-01 217.200
1920-08-01 220.400
1920-09-01 210.500
1920-10-01 200.800
1920-11-01 192.700
1920-12-01 203.900
1921-01-01 197.600
1921-02-01 171.900
1921-03-01 189.500
1921-04-01 182.500
1921-05-01 185.300
1921-06-01 187.700
1921-07-01 204.300
1921-08-01 203.500
1921-09-01 194.900
1921-10-01 187.800
1921-11-01 179.500
1921-12-01 188.400
1922-01-01 185.500
1922-02-01 164.200
1922-03-01 182.700
1922-04-01 177.800
1922-05-01 184.400
1922-06-01 194.600
1922-07-01 200.900
1922-08-01 195.800
1922-09-01 186.800
1922-10-01 183.700
1922-11-01 178.100
1922-12-01 189.900
1923-01-01 190.600
1923-02-01 166.700
1923-03-01 187.400
1923-04-01 182.800
1923-05-01 191.100
1923-06-01 199.300
1923-07-01 213.100
1923-08-01 215.800
1923-09-01 205.300
1923-10-01 197.400
1923-11-01 186.400
1923-12-01 198.800
1924-01-01 196.400
1924-02-01 180.300
1924-03-01 191.600
1924-04-01 189.000
1924-05-01 193.700
1924-06-01 198.700
1924-07-01 211.600
1924-08-01 214.700
1924-09-01 202.000
1924-10-01 193.900
1924-11-01 185.400
1924-12-01 199.500
1925-01-01 200.700
1925-02-01 178.200
1925-03-01 195.500
1925-04-01 192.300
1925-05-01 197.000
1925-06-01 203.900
1925-07-01 220.100
1925-08-01 223.700
1925-09-01 212.400
1925-10-01 204.800
1925-11-01 197.000
1925-12-01 208.700
1926-01-01 207.900
1926-02-01 184.200
1926-03-01 201.800
1926-04-01 197.200
1926-05-01 204.100
1926-06-01 211.200
1926-07-01 226.000
1926-08-01 224.100
1926-09-01 215.200
1926-10-01 205.600
1926-11-01 197.200
1926-12-01 211.700
1927-01-01 211.500
1927-02-01 185.800
1927-03-01 205.200
1927-04-01 198.700
1927-05-01 204.700
1927-06-01 208.600
1927-07-01 226.100
1927-08-01 224.800
1927-09-01 214.400
1927-10-01 203.900
1927-11-01 193.300
1927-12-01 206.900
1928-01-01 207.200
1928-02-01 189.500
1928-03-01 201.900
1928-04-01 195.500
1928-05-01 200.800
1928-06-01 207.900
1928-07-01 221.700
1928-08-01 221.000
1928-09-01 209.200
1928-10-01 202.000
1928-11-01 188.100
1928-12-01 203.000
1929-01-01 207.000
1929-02-01 185.200
1929-03-01 205.000
1929-04-01 196.200
1929-05-01 202.600
1929-06-01 211.200
1929-07-01 224.900
1929-08-01 226.900
1929-09-01 212.300
1929-10-01 203.900
1929-11-01 194.500
1929-12-01 208.600
1930-01-01 211.700
1930-02-01 187.200
1930-03-01 205.200
1930-04-01 196.300
1930-05-01 197.900
1930-06-01 202.600
1930-07-01 210.500
1930-08-01 212.400
1930-09-01 193.800
1930-10-01 188.400
1930-11-01 175.800
1930-12-01 190.000
1931-01-01 189.600
1931-02-01 166.500
1931-03-01 181.300
1931-04-01 174.400
1931-05-01 174.700
1931-06-01 175.300
1931-07-01 187.200
1931-08-01 183.700
1931-09-01 172.700
1931-10-01 163.900
1931-11-01 154.500
1931-12-01 165.800
1932-01-01 161.800
1932-02-01 145.900
1932-03-01 151.200
1932-04-01 143.800
1932-05-01 146.900
1932-06-01 143.400
1932-07-01 152.200
1932-08-01 148.200
1932-09-01 141.600
1932-10-01 133.800
1932-11-01 128.400
1932-12-01 138.100
1933-01-01 134.500
1933-02-01 117.600
1933-03-01 125.000
1933-04-01 119.700
1933-05-01 124.800
1933-06-01 137.400
1933-07-01 143.200
1933-08-01 146.800
1933-09-01 145.800
1933-10-01 144.000
1933-11-01 124.800
1933-12-01 136.800
1934-01-01 135.900
1934-02-01 119.800
1934-03-01 134.200
1934-04-01 131.000
1934-05-01 132.700
1934-06-01 139.000
1934-07-01 150.800
1934-08-01 152.000
1934-09-01 145.000
1934-10-01 142.900
1934-11-01 127.900
1934-12-01 144.700
1935-01-01 144.000
1935-02-01 125.600
1935-03-01 138.800
1935-04-01 134.900
1935-05-01 136.700
1935-06-01 138.600
1935-07-01 148.600
1935-08-01 151.900
1935-09-01 143.200
1935-10-01 140.500
1935-11-01 134.700
1935-12-01 151.300