An Approach to the Determinants of the Agricultural Output Dynamics in the USA - The Agricultural Economics of the 21st Century - page 5

United States Agricultural land (% of
land area)

50

49

48

47

United States
Agricultural land (% of
land area)

46

45

44

43

42

Fig. 2.1 Agricultural land (% of land area) in the USA

United States Forest area (% of land area)

33,4

33,2

33

32,8

32,6

32,4

32,2

32

31,8

Fig. 2.2 Forest area (% of land area) in the USA

United States Agriculture value added per worker (constant 2005
US$)

70000

60000

50000

40000

30000

20000

10000

0

Fig. 2.3 Agriculture value added per worker (constant 2005 US$) in the USA

Again, the percentage of annual freshwater withdrawals for agriculture, which
increased about 20 % in the period 1982-2011, seems to confirm the rise in
intensity of USA agriculture over the last decades (Fig. 2.9 ).
Inflation (Fig. 2.10 ) presented some problems in the 1970s and 1980s, but over
the last few years had values of around 2 and 4 %. The lending interest rates