Year	kg per 2010 US$ of GDP
1992	1.80862039261384
1993	1.84669644583942
1994	1.85060869268703
1995	1.854551312043
1996	1.90504931066962
1997	1.77746445806358
1998	1.8394205826022
1999	1.76996194834517
2000	1.63718682272281
2001	1.55734889323063
2002	1.48703662973592
2003	1.42784105385233
2004	1.33017607815389
2005	1.26028966683607
2006	1.20384555890839
2007	1.107955867235
2008	1.08357675539355
2009	1.0786663178368
2010	1.09548957276102
2011	1.1087186963963
2012	1.11003930288897
2013	1.05928109887377
2014	1.00861498219304