It took a while to find this one but it was approx. 2.3 billion.
About four million (2,888,110 in the city in 1911, and a million or so in the suburbs).
The population of Paris was roughly three and a half million people.
500000
900,000,000
two billion
Volontaires - Paris Métro - was created in 1910.
Cadet - Paris Métro - was created in 1910.
Crimée - Paris Métro - was created in 1910.
Pasteur - Paris Métro - was created in 1910.
Riquet - Paris Métro - was created in 1910.
Poissonnière - Paris Métro - was created in 1910.
Cité - Paris Métro - was created in 1910.
RCF Paris were the French football runner ups in 1910.
La miniature - 1910 was released on: France: 11 March 1910 (Paris) USA: 13 April 1910
Louis Blanc - Paris Métro - was created in 1910.
Saint-Sulpice - Paris Métro - was created in 1910.
Château-Landon - Paris Métro - was created in 1910.