Year	Ratio
1985-01-01	1.12204003334045
1986-01-01	1.24454998970032
1987-01-01	1.12311005592346
1988-01-01	1.14170002937317
1989-01-01	1.21019995212555
1990-01-01	1.21742999553680
2002-01-01	1.65418994426727