The data used to create this chart (from Wikipedia)

Year 19491953195719611965196919721976 19801983198719901994199820022005 2009
CDU 25.236.439.735.839.336.635.238.0 34.238.234.536.734.228.429.527.8 27.3
CSU 5.88.810.59.69.69.59.710.610.3 10.69.87.17.36.79.07.46.5
SPD 29.228.831.836.239.342.745.842.6 42.938.237.033.536.440.938.534.2 23.0
FDP 11.99.57.712.89.55.88.47.910.6 7.09.111.06.96.27.49.814.6
Bündnis 90/Die Grünen --------1.55.6 8.357.36.78.68.110.7
PDS/Linke ----------- 2.44.45.14.08.711.9
Piraten ----------- -----2.0
NPD ----2.04.30.60.30.20.2 0.60.30.00.30.41.61.5
DP 4.03.33.4------- -------
GB/BHE -5.94.6------- -------
REP ----------- 2.11.91.80.60.60.4
KPD 5.72.2-------- -------
BP4.21.70.9--0.2-- --0.10.10.10.10.00.10.1
Others 14.07.89.45.73.65.30.90.9 0.50.51.34.13.45.93.01.72.0