Year % of GNI 1990 1.3780233385975016 1991 1.3459556084934305 1992 1.511668486753425 1993 1.6379123558841864 1994 1.7905521589594482 1995 1.7126297599375442 1996 1.837722627225739 1997 1.9336485677769877 1998 2.1756770064544613 1999 2.213554053130031 2000 2.2452624092574864 2001 2.7680835909481947 2002 2.8252171558092427 2003 2.3609716381125607 2004 2.1569454724041113 2005 1.9767028265909374 2006 1.8713742565702225 2007 1.780006626604464 2008 1.5093069247882533 2009 1.5508157954689419 2010 1.4574584243251694 2011 1.3426687441068808 2012 1.389551569368576 2013 1.4304408997603466 2014 1.465682514953835 2015 1.654839798444618 2016 1.879570045007134 2017 1.856524304279496 2018 1.8306905022276163 2019 1.9158334696889991 2020 1.9943992757114914 2021 1.9873004400981984