1

Soviet Union

2

1

2

1

-

2

France

2

1

1

2

1

3

East Germany

1

-

4

1

-

4

Belgium

1

-

-

-

-

4

Italy

1

-

-

-

-

4

Switzerland

1

-

-

-

-

7

Cuba

-

3

-

1

-

8

Great Britain

-

1

1

2

1

9

Mongolia

-

1

1

1

-

10

Bulgaria

-

1

1

-

1

11

Hungary

-

-

2

1

-

12

Czechoslovakia

-

-

1

1

1

12

Poland

-

-

1

1

1

14

Yugoslavia

-

-

1

-

1

15

Netherlands

-

-

1

-

-

16

Romania

-

-

-

1

2

17

Democratic People's Republic of Korea

-

-

-

1

1

17

Sweden

-

-

-

1

1

19

Brazil

-

-

-

1

-

19

Spain

-

-

-

1

-

21

Australia

-

-

-

-

1

21

Cameroon

-

-

-

-

1

21

Finland

-

-

-

-

1

21

Syrian Arab Republic

-

-

-

-

1

25

Algeria

25

Austria

25

Costa Rica

25

Cuba

25

Cyprus

25

Czechoslovakia

25

East Germany

25

Ecuador

25

Guinea

25

Iceland

25

Ireland

25

Italy

25

Kuwait

25

Lebanon

25

Madagascar

25

Mali

25

Mexico

25

Poland

25

Portugal

25

San Marino

25

Senegal

25

Soviet Union

25

Yugoslavia

25

Zambia

25

Zimbabwe