Table:
text: List of tallest buildings in Frankfurt
Tallest completed buildings
Tallest completed buildings
Name_ Height_m Height_ft Location_ Year_built
Europaturm 337.5 1107.3 Ginnheimer Stadtweg 90, Bockenheim 1979
Commerzbank Tower 259.0 849.7 Große Gallusstraße 17–19, Innenstadt 1997
Messeturm 256.5 841.5 Friedrich-Ebert-Anlage 49, Westend-Süd 1990
Westendstraße 1 208.0 682.4 Westendstraße 1, Westend-Süd 1993
Main Tower 200.0 656.2 Neue Mainzer Straße 52–58, Innenstadt 1999
Tower 185 200.0 656.2 Friedrich-Ebert-Anlage 35–37, Gallus 2011
Trianon 186.0 610.2 Mainzer Landstraße 16–24, Westend-Süd 1993
European Central Bank Headquarters [A ] 185.0 607.0 Sonnemannstraße/Rückertstraße, Ostend 2014
Opernturm 170.0 557.7 Bockenheimer Landstraße 2–4, Westend-Süd 2009
Taunusturm [A ] 170.0 557.7 Taunustor 1-3, Innenstadt 2014
Silberturm 166.3 545.6 Jürgen-Ponto-Platz 1, Bahnhofsviertel 1978

Question: From the list of the tallest completed buildings in Frankfurt, which is the earliest year that the building at Sonnemannstrasse/rückertstrasse, Ostend, with a height exceeding 185 meters was constructed?