Teorie ekonomického růstu
Zdroj: Jones,! C: Introduction to economic growth. New York: W.W. Norton, 2002.
FIGURE
ECONOMIC ATTRIBUTES OF SELECTED GOODS
Degree of excludability
Rivalrous goods	Nonrivalrous goods
Lawyer services	Encoded satellite TV
CD player	transmission
Floppy disk	
	Computer code for a
	software application
	Operations manual for
	Wal-Mart stores
Fish in the sea	National defense
	Basic R&D
Sterile insects for	Calculus
pest control	
SOURCE: This is a slightly altered version of Figure 1 in Romer (1993).
1
PATENTS ISSUED IN THE UNITED STATES, 1880-1999
NUMBER
OF
PATENTS 1 50,000 ISSUED
125,000
100,000
75,000
50,000
25,000
0
1880       1900       1920       1940       1960       1980 2000
YEAR
SOURCE: U.S. Patent and Trademark Office (2001).
2
FIGURE 4.S   SCIENTISTS AND ENGINEERS ENGAGED IN R&D, 1950-93
NUMBER OF SCIENTISTS ^,0<->U
AND ENGINEERS (THOUSANDS)
2,000 h
1,500
1,000
500
1950 1955 1960 1965 1970 1975 1980 1985 1990 1995
3
WORLD POPULATION GROWTH, 1 A.D. TO 1990
AVERAGE ANNUAL POPULATION GROWTH RATE
0.025
0.020 h
0.015
0.010
0.005
o
0.005 I-1-1-i-1-1—
J_L
200    400    600    800   1000  1200  1400  1600  1800 2000
YEAR
SOURCE: Author's calculations and Kremer (1993).
4