|
|
Period
|
Domestic
Shipments1
|
U.S.
Imports2
|
U.S.
Exports
|
Total
Consumption3
|
Import
Penetration4
|
|
|
|
|
|
|
| 1978 |
301,710
|
253,897
|
5,802
|
549,805
|
46.2%
|
| 1979 |
312,795
|
291,577
|
6,688
|
597,684
|
48.8%
|
| 1980 |
297,633
|
255,412
|
7,942
|
545,103
|
46.9%
|
| 1981 |
299,776
|
254,658
|
11,151
|
543,283
|
46.9%
|
| 1982 |
304,696
|
225,780
|
11,829
|
518,647
|
43.5%
|
| 1983 |
348,305
|
297,498
|
10,008
|
635,795
|
46.8%
|
| 1984 |
408,737
|
448,405
|
8,337
|
848,805
|
52.8%
|
| 1985 |
393,494
|
507,429
|
6,126
|
894,797
|
56.7%
|
| 1986 |
452,193
|
485,875
|
6,055
|
932,013
|
52.1%
|
| 1987 |
478,917
|
509,791
|
6,860
|
981,848
|
51.9%
|
| 1988 |
470,696
|
515,787
|
9,513
|
976,970
|
52.8%
|
| 1989 |
543,081
|
637,075
|
27,130
|
1,153,026
|
55.3%
|
| 1990 |
509,225
|
520,434
|
9,185
|
1,020,474
|
51.0%
|
| 1991 |
484,790
|
443,049
|
12,033
|
915,806
|
48.4%
|
| 1992 |
495,676
|
546,376
|
9,476
|
1,032,576
|
52.9%
|
| 1993 |
558,708
|
641,618
|
12,499
|
1,187,827
|
54.0%
|
| 1994 |
604,408
|
711,203
|
10,400
|
1,305,211
|
54.5%
|
| 1995 |
568,094
|
774,591
|
48,790
|
1,293,895
|
59.9%
|
| 1996 |
580,392
|
884,018
|
39,366
|
1,425,044
|
62.0%
|
| 1997 |
618,978
|
1,022,898
|
47,473
|
1,594,403
|
64.2%
|
| 1998 |
636,805
|
1,232,975
|
45,723
|
1,824,057
|
67.6%
|
| 1999 |
636,242
|
1,494,042
|
42,282
|
2,088,002
|
71.6%
|
| 2000 |
620,064
|
1,685,716
|
42,685
|
2,263,094
|
74.5%
|
| 2001 |
591,080
|
1,716,371
|
33,306
|
2,274,145
|
75.5%
|
| 2002 |
649,488
|
2,034,634
|
41,705
|
2,642,417
|
77.0%
|
| 2003 |
614,955
|
2,231,188
|
28,938
|
2,817,205
|
78.2%
|
| 2004 |
695,386
|
2,488,181
|
34,727
|
3,148,840
|
79.2%
|
| 2005 |
658,198
|
2,638,359 |
37,022
|
3,259,535
|
80.9%
|
| 2006 |
629,672 |
2,732,199 |
45,107 |
3,316,764 |
82.4% |
| 2007 |
426,904 |
1,696,116 |
36,800 |
2,086,220 |
81.3% |
|
