Based on the data, did the dollar depreciate or appreciate against the pound, the Canadian dollar, the france, the yen, and the mark between 1970 and 1980? Between 1980 and 1990? Between 1990 and 2000? Between 2000 and 2011?
Value on January 1 each year
1970 1980 1990 2000 2011
US dollar/UK pound 2.40 2.22 1.61 1.62 1.43
Canadian dollar/US dollar 1.07 1.17 1.16 1.44 1.05
French franc/US dollar 5.55 4.02 5.77 6.51 ___
Japanese yen/US dollar 358 240 144 102 93
German mark/US dollar 3.69 1.73 1.69 1.94 ___
US dollar/European euro ____ ____ ___ 1.01 1.33
Note- Each exchange rate shows the number of units of the first currency that are needed to obtain one unit of the second currency.