大值年

小值年

AAOI

1979, 1985, 1993, 2010, 2015, 2017

1980, 1981, 1995, 1996, 2000, 2007, 2009, 2011, 2013

PC1

1980, 1981, 1996, 2000, 2007, 2009, 2011, 2013, 2014

1979, 1982, 1985, 1986, 1993, 2004, 2010, 2015

PC2

1980, 1982, 1987, 1992, 1995, 2006

1984, 1989, 1996, 2003, 2010, 2013,2017