An Approach to the Determinants of the Agricultural Output Dynamics in the USA - The Agricultural Economics of the 21st Century - page 8

United States Inflaon, consumer prices (annual %)

16

14

12

10

8

6

4

2

0

-2

Fig. 2.10 Inflation, consumer prices (annual %) in the USA

United States Lending interest rate (%)

20

18

16

14

12

10

8

6

4

2

0

Fig. 2.11 Lending interest rate (%) in the USA

United States Central
government debt, total
(% of GDP)

100

80

60

40

20

0

Fig. 2.12 Central government debt, total (% of GDP) in the USA

The percentage of exports relative to the GDP increased significantly, in the
period 1961-2012, from around 5 % in 1961 to about 14 % in 2012 (Fig. 2.14 ). This
shows great economic dynamics and great perspectives for the future, considering
that the external demand is one the most important engines for the economy
(Keynesian theory).