| 1978 3 | | 1999 1 2002 7 | | | 2002.07 2003.08 WTO | 2003.08 2008.11 | | | 2008.11 2008.12 | | 2008.12 2009.08 | | 2009.08 2011.07 | | 2011.07 2016.06 | | 2016.06 2020.10 | | 2020.10 2021.05 | | 2021.05 2021.06 | | 2021.06- | | |