year,series,value
1966,mean,0
1967,mean,1.234169258
1968,mean,8.599030614
1969,mean,2.295872289
1970,mean,3.007814679
1971,mean,7.178691325
1972,mean,1.091222822
1973,mean,-1.259309975
1974,mean,6.643906659
1975,mean,8.424295079
1976,mean,6.840189997
1977,mean,6.760570709
1978,mean,1.9052366
1979,mean,12.14209345
1980,mean,13.61835832
1981,mean,8.074294109
1982,mean,12.23714459
1983,mean,17.18041777
1984,mean,16.93528088
1985,mean,13.97254926
1986,mean,10.75650084
1987,mean,14.8315224
1988,mean,16.22519376
1989,mean,21.80834751
1990,mean,15.00746059
1991,mean,25.19039737
1992,mean,16.10374937
1993,mean,22.33606951
1994,mean,21.88841693
1995,mean,26.4797776
1996,mean,22.93807387
1997,mean,25.78710131
1998,mean,30.45617576
1999,mean,36.24196053
2000,mean,31.26558945
2001,mean,30.56212236
2002,mean,38.62891189
2003,mean,39.84006999
2004,mean,38.79027198
2005,mean,37.50088673
2006,mean,45.24713787
2007,mean,41.42314978
2008,mean,40.2500239
2009,mean,39.77682647
2010,mean,39.83776387
2011,mean,39.98693033
2012,mean,44.04976673
2013,mean,40.73000795
1966,lower_confidence,0
1967,lower_confidence,-4.391334123
1968,lower_confidence,3.225097431
1969,lower_confidence,-4.008747442
1970,lower_confidence,-3.183284433
1971,lower_confidence,0.47596227
1972,lower_confidence,-6.219161926
1973,lower_confidence,-7.148037274
1974,lower_confidence,-0.901572338
1975,lower_confidence,0.413917651
1976,lower_confidence,-1.527713365
1977,lower_confidence,-3.611101164
1978,lower_confidence,-7.502975833
1979,lower_confidence,0.984122206
1980,lower_confidence,2.197881371
1981,lower_confidence,-2.413447371
1982,lower_confidence,2.285464334
1983,lower_confidence,5.302736262
1984,lower_confidence,4.530650914
1985,lower_confidence,1.179589638
1986,lower_confidence,-1.943486707
1987,lower_confidence,1.637006111
1988,lower_confidence,2.750419911
1989,lower_confidence,6.933770023
1990,lower_confidence,0.045572739
1991,lower_confidence,9.166270315
1992,lower_confidence,-0.242603812
1993,lower_confidence,6.03789238
1994,lower_confidence,5.192377507
1995,lower_confidence,9.601565175
1996,lower_confidence,6.853785452
1997,lower_confidence,8.380504162
1998,lower_confidence,13.02925369
1999,lower_confidence,18.43680035
2000,lower_confidence,13.60361143
2001,lower_confidence,11.48328628
2002,lower_confidence,20.39774779
2003,lower_confidence,20.15477348
2004,lower_confidence,19.16518346
2005,lower_confidence,18.02380193
2006,lower_confidence,26.649291
2007,lower_confidence,21.59356068
2008,lower_confidence,20.53988808
2009,lower_confidence,19.1775246
2010,lower_confidence,18.3841119
2011,lower_confidence,18.36516992
2012,lower_confidence,21.46076844
2013,lower_confidence,18.67379436
1966,upper_confidence,0
1967,upper_confidence,6.859672639
1968,upper_confidence,13.9729638
1969,upper_confidence,8.600492021
1970,upper_confidence,9.198913792
1971,upper_confidence,13.88142038
1972,upper_confidence,8.40160757
1973,upper_confidence,4.629417325
1974,upper_confidence,14.18938566
1975,upper_confidence,16.43467251
1976,upper_confidence,15.20809336
1977,upper_confidence,17.13224258
1978,upper_confidence,11.31344903
1979,upper_confidence,23.30006469
1980,upper_confidence,25.03883526
1981,upper_confidence,18.56203559
1982,upper_confidence,22.18882486
1983,upper_confidence,29.05809928
1984,upper_confidence,29.33991084
1985,upper_confidence,26.76550888
1986,upper_confidence,23.45648839
1987,upper_confidence,28.02603868
1988,upper_confidence,29.6999676
1989,upper_confidence,36.68292499
1990,upper_confidence,29.96934843
1991,upper_confidence,41.21452442
1992,upper_confidence,32.45010255
1993,upper_confidence,38.63424663
1994,upper_confidence,38.58445635
1995,upper_confidence,43.35799003
1996,upper_confidence,39.02236229
1997,upper_confidence,43.19369846
1998,upper_confidence,47.88309784
1999,upper_confidence,54.04712071
2000,upper_confidence,48.92756747
2001,upper_confidence,49.64095843
2002,upper_confidence,56.86007599
2003,upper_confidence,59.52536651
2004,upper_confidence,58.41536051
2005,upper_confidence,56.97797153
2006,upper_confidence,63.84498473
2007,upper_confidence,61.25273889
2008,upper_confidence,59.96015973
2009,upper_confidence,60.37612834
2010,upper_confidence,61.29141583
2011,upper_confidence,61.60869073
2012,upper_confidence,66.63876502
2013,upper_confidence,62.78622154