Year	Domestic	Foreign
1980	6.581	2.398
1981	6.209	2.327
1982	5.759	2.224
1983	6.795	2.387
1984	7.952	2.439
1985	8.205	2.838
1986	8.215	3.245
1987	7.081	3.196
1988	7.526	3.004
1989	7.073	2.699
1990	6.897	2.404
1991	6.137	2.038
1992	6.277	1.938
1993	6.742	1.776
1994	7.255	1.735
1995	7.129	1.506