| Opened | Country | # Passengers/Year | Building | % Correct |
|---|---|---|---|---|
| January 10, 1863 | UK | 1.3 billion | London Underground | 100%
|
| May 15, 1935 | Russia | 2.4 billion | Moscow Metro | 100%
|
| October 27, 1904 | USA | 1.7 billion | New York City Subway | 100%
|
| July 19, 1900 | France | 1.5 billion | Paris Métro | 100%
|
| December 30, 1927 | Japan | 3 billion | Tokyo Subway | 100%
|
| October 1, 1969 | China | 3.78 billion | Beijing Subway | 99%
|
| Summer 1896 | Hungary | 409 million | Budapest Metro | 99%
|
| December 1, 1913 | Argentina | 438 million | Buenos Aires Underground | 97%
|
| December 14, 1896 | UK | 146 million | Glasgow Subway | 91%
|