obs	year	stocks	bonds
1	1985	12.8	100.8
2	1986	34.6	161.8
3	1987	28.8	10.6
4	1988	-23.3	-5.8
5	1989	8.3	-1.4
6	1990	17.1	9.2
7	1991	50.6	74.6
8	1992	97	87.1
9	1993	151.3	84.6
10	1994	133.6	-72
11	1995	140.1	-6.8
12	1996	238.2	3.3
13	1997	243.5	30
14	1998	165.9	79.2
15	1999	194.3	-6.2
16	2000	309	-48