Year	PPG (DOD, current US$)
1999	2244166639.4
2000	1959013988
2001	1781924562.4
2002	2035276908.2
2003	2319678029.5
2004	2689895300.4
2005	2562973489.4
2006	2722495334.7
2007	2966842787.1
2008	3008225226.4
2009	3569910385.6
2010	3733349191.8
2011	3874321851.3
2012	4201093990.3
2013	4790589134.6
2014	4731410064.5
2015	4385581276
2016	4395638601
2017	4836936101.8
2018	4918697830.3
2019	4875811442.7
2020	5206551537.1
2021	5098090867.6
2022	4742014025.5