Year,Value,NumPoints
1981,280.047,482
1982,279.658,482
1983,280.352,482
1984,280.105,482
1985,279.372,482
1986,280.148,482
1987,280.066,482
1988,279.451,482
1989,279.181,482
1990,279.18,482
1991,279.799,482
1992,279.874,482
1993,280.2,482
1994,279.357,482
1995,279.397,482
1996,279.679,482
1997,280.078,482
1998,280.287,481
1999,279.233,482
2000,279.558,482
2001,279.227,482
2002,279.977,482
2003,280.249,482
2004,279.708,482
2005,279.552,482
2006,279.231,482
2007,279.172,482
2008,278.839,482
2009,278.845,482
2010,279.495,482
2011,279.112,482
2012,279.193,482
2013,279.466,482
2014,280.138,482
2015,280.294,482
2016,280.387,482
2017,279.482,482
2018,280.332,482
2019,280.637,482