Year	kg per 2010 US$ of GDP
1993	0.272593897741182
1994	0.4457992427358
1995	0.425758421742319
1996	0.419156049838023
1997	0.383818101022957
1998	0.464426838633188
1999	0.400453015108815
2000	0.37709876846678
2001	0.399799286251056
2002	0.367789003387955
2003	0.365421090904627
2004	0.340360917768125
2005	0.34109172832765
2006	0.332737851010153
2007	0.348778388860733
2008	0.367723078097517
2009	0.438604302302016
2010	0.445887412581359
2011	0.432592498236743
2012	0.422415491009937
2013	0.404046405077011
2014	0.449917097768794