fixed , error

tikz/landtagswahlen-in-bayern/landtagswahlen-in-bayern.csv

@@ -11,7 +11,7 @@ Wahltag,Wahlbeteiligung,CSU,SPD,FDP,GRÜNE,BP,FW,ÖDP,REP,NPD,KPD,GB/BHE,Sonstig
 1978-10-15,76.6,59.1,31.4,6.2,1.8,0.4,,,,0.6,,,
 1982-10-10,78.0,58.3,31.9,3.5,4.6,0.5,,0.4,,0.6,,,
 1986-10-12,70.1,55.8,27.5,3.8,7.5,0.6,,0.7,3,0,0.5,,
-1990-10-14,65.9,54.9,26.0,5.2,6.4,0.8,,1.7,4,9,,,,
+1990-10-14,65.9,54.9,26.0,5.2,6.4,0.8,,1.7,4,9,,,
 1994-09-25,67.8,52.8,30.0,2.8,6.1,1.0,0.1,2.1,3.9,0.1,,,
 1998-09-13,69.8,52.9,28.7,1.7,5.7,0.7,3.7,1.8,3.6,0.2,,,
 2003-10-21,57.1,60.7,19.6,2.6,7.7,0.7,4.0,2.0,2.2,,,,