# Years Size Links
Ag 1918–1957 16.7%
Ce 1958–2012 25.7%
ChDe 1992–2012 12.0%
Co 1921–1991 6.5%
Co 1900–1959 51.7%
FrTr 1887–1893 61.5%
Gr 1989–2012 7.2%
Li 1894–2012 47.4%
Mo 1960–2012 30.7%
MoFrTr 1894–1899 28.9%
PePa 1928–1944 11.7%
PrLi 1925–1936 12.1%
Pr 1887–1899 52.3%
SoDe 1897–1911 27.8%