Germany

0

1

2

3

4

5

6

50s 60s 70s 80s 90s 0 10s

Italy

0

2

4

6

8

10

12

14

50s 60s 70s 80s 90s 0 10s

USA

0

1

2

3

4

5

6

7

8

50s 60s 70s 80s 90s 0 10s

Japan

-2

0

2

4

6

8

10

50s 60s 70s 80s 90s 0 10s