"Year","P99.9-P100","P99.5-P99.9","P99-P99.5"
1978,1.634105,3.156602,2.635079
1979,1.629844,3.123968,2.567857
1980,1.754908,3.282315,2.649313
1981,1.782744,3.252513,2.650433
1982,1.952098,3.456256,2.760657
1983,2.118991,3.505621,2.781451
1984,2.316174,3.611036,2.797571
1985,2.322165,3.626362,2.835802
1986,2.492756,3.798451,2.926233
1987,3.117348,4.249661,3.043008
1988,3.57454,4.538574,3.148714
1989,3.350481,4.456439,3.160237
1990,3.459837,4.517018,3.157015
1991,3.133561,4.308185,3.109195
1992,3.804484,4.616441,3.199545
1993,3.587564,4.455800,3.221349
1994,3.371229,4.34986,3.176084
1995,3.473318,4.470712,3.252343
1996,3.704671,4.569606,3.286853
1997,4.498144,4.62762,3.321236
1998,4.706749,4.671092,3.31721
1999,5.155183,4.76541,3.356501
2000,5.48694,4.894648,3.413312
2001,5.050199,4.68964,3.310118
2002,4.351037,4.460988,3.22805
2003,4.46001,4.527231,3.249151
2004,4.887836,4.658804,3.321259