what is the difference between the number of athletes from germany and the number of athletes from the united states?
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col : hand | auto | wind | athlete | nationality | birthdate | location | date row 1 :  | 10.26 | 2.3 | troy douglas | netherlands | 30.11.1962 | utrecht | 10.07.2004 row 2 :  | 10.29 | 1.9 | troy douglas | netherlands | 30.11.1962 | leiden | 07.06.2003 row 3 :  | 10.60 |  | bill collins | united states | 20.11.1950 |  | 06.06.1992 row 4 :  | 10.84 | 1.8 | erik oostweegel | netherlands | 29.04.1960 | tilburg | 10.06.2000 row 5 :  | 10.87 |  | eddie hart | united states | 24.04.1949 | eugene | 03.08.1989 row 6 :  | 10.90 |  | thaddeus bell | united states | 28.11.1942 | raleigh | 01.05.1988 row 7 :  | 10.93 | 0.6 | gilles echevin | france | 01.09.1948 | grenoble | 07.05.1989 row 8 : 10.7 |  |  | klaus jürgen schneider | germany | 02.03.1942 | stuttgart | 07.07.1982 row 9 : 10.7 |  |  | walt butler | united states | 21.03.1941 | northridge | 16.05.1981 row 10 : 10.7 |  |  | thane baker | united states | 04.10.1931 | elkhart | 13.09.1972 row 11 :  | 10.95 |  | george mcneill | united kingdom | 19.02.1947 | melbourne | 31.11.1987 row 12 :  | 10.95 |  | karl heinz schröder | germany | 17.06.1939 | hannover | 28.07.1979
what is the difference between the number of athletes from germany and the number of athletes from the united states?
Hand Auto Wind Athlete Nationality Birthdate Location Date
10.26 2.3 Troy Douglas Netherlands 30.11.1962 Utrecht 10.07.2004
10.29 1.9 Troy Douglas Netherlands 30.11.1962 Leiden 07.06.2003
10.60 Bill Collins United States 20.11.1950 06.06.1992
10.84 1.8 Erik Oostweegel Netherlands 29.04.1960 Tilburg 10.06.2000
10.87 Eddie Hart United States 24.04.1949 Eugene 03.08.1989
10.90 Thaddeus Bell United States 28.11.1942 Raleigh 01.05.1988
10.93 0.6 Gilles Echevin France 01.09.1948 Grenoble 07.05.1989
10.7 Klaus Jürgen Schneider Germany 02.03.1942 Stuttgart 07.07.1982
10.7 Walt Butler United States 21.03.1941 Northridge 16.05.1981
10.7 Thane Baker United States 04.10.1931 Elkhart 13.09.1972
10.95 George McNeill United Kingdom 19.02.1947 Melbourne 31.11.1987
10.95 Karl Heinz Schröder Germany 17.06.1939 Hannover 28.07.1979
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