Year,R_S
1982,0.4529
1983,0.4031
1984,0.2601
1985,0.9344
1986,0.6496
1987,0.7405
1988,1.0532
1989,1.9291
1990,1.5122
1991,2.0857
1992,1.7912
1993,3.2356
1994,4.7207
1995,5.0112
1996,8.2748
1997,10.6618
1998,7.6247
1999,3.5775
2000,1.4476
2001,0.4255
2002,0.2753
2003,
2004,