Year	Measure
1960	289.05707
1961	322.49058
1962	350.10126
1963	367.81143
1964	433.55934
1965	478.75586
1966	547.197
1967	607.70216
1968	652.0816
1969	725.52562
1970	872.78373
1971	984.04208
1972	1134.78649
1973	1322.76394
1974	1256.34873
1975	1298.20436
1976	1386.10047
1977	1469.54943
1978	1525.44354
1979	1597.92593
1980	1553.78162
1981	1505.27939
1982	1537.2777
1983	1599.07022
1984	1652.72998
1985	1766.76615
1986	1673.81805
1987	1791.83339
1988	1902.91445
1989	2093.11435
1990	2102.67769
1991	2094.6215
1992	2129.89452
1993	2090.76236
1994	2138.25195
1995	2147.13648
1996	2206.10389
1997	2282.13703
1998	2389.79315
1999	2390.08287
2000	2506.63995
2001	2578.11211
2002	2597.74829
2003	2666.45364
2004	2711.46679
2005	2753.0512
2006	2742.62996
2007	2734.75583
2008	2745.49346
2009	2649.6612
2010	2482.11012
2011	2407.76274
2012	2403.23047
2013	2128.01067
2014	2123.89789
2015	2182.07109