Year,Norway,Croatia,Bhutan
1961,6.27333551040714,nan,nan
1965,5.28560880055215,nan,nan
1970,1.94330050548342,nan,nan
1974,3.92218177458818,nan,5.15826493134593
1979,4.37250649718715,nan,4.79096734776185
1983,3.97300737987926,nan,10.4310159400869
1988,-0.255186919919623,nan,4.76737301961812
1992,3.5744589537378,-11.7132905102592,4.60089124887257
1997,5.28460660979037,6.16799075879069,5.37383854585261
2001,2.06713043546189,3.11123487893718,7.32837435673082
2006,2.46147311635166,5.0814659040727,5.6408051539139
2010,0.787051861494078,-1.33408152400571,11.9318738376229
2015,1.85733971623901,2.32317515803855,6.66080128866197
2019,1.12374694968757,3.10043911443758,5.75514851246506
2024,2.10045327837291,3.81494521667429,nan