seriali vacheron

1850 50,000
1890 180,000
1895 217,000
1900 255,000
1905 287,000
1910 330,000
1915 360,000
1920 390,000
1925 398,000
1930 405,000
1935 427,000
1940 450,000
1945 475,000
1950 500,000
1955 525,000
1960 550,000