Annual Units
1960-01-01 67216.62712718200
1961-01-01 62021.70415635910
1962-01-01 65522.81020598500
1963-01-01 84215.58203956780
1964-01-01 99416.26548237739
1965-01-01 93723.28385361600
1966-01-01 88959.45507406481
1967-01-01 93241.08959551119
1968-01-01 93257.20448586870
1969-01-01 82448.20440124690
1970-01-01 91614.32063782211
1971-01-01 109102.56703981700
1972-01-01 138843.22342078100
1973-01-01 137398.64457065702
1974-01-01 103036.52152443900
1975-01-01 98733.92929584370
1976-01-01 106751.79697182000
1977-01-01 109656.65207822100
1978-01-01 131873.24110224400
1979-01-01 142363.28325336700
1980-01-01 126853.24401379900
1981-01-01 124790.53804804699
1982-01-01 132286.38347265200
1983-01-01 150796.46421762300
1984-01-01 146891.56744380700
1985-01-01 153800.34657772200
1986-01-01 157237.41055012500
1987-01-01 168351.34109891900
1988-01-01 184536.36880299200
1989-01-01 192460.21903574400
1990-01-01 167411.16666666698
1991-01-01 132693.83333333300
1992-01-01 132800.00000000000
1993-01-01 148202.16666666700
1994-01-01 159244.41666666700
1995-01-01 162113.83333333300
1996-01-01 168787.50000000000
1997-01-01 180893.75000000000
1998-01-01 187283.58333333302
1999-01-01 183134.58333333302
2000-01-01 185139.16666666700
2001-01-01 204897.41666666700
2002-01-01 213635.91666666698
2003-01-01 214920.83333333300
2004-01-01 213939.08333333300
2005-01-01 203309.75000000000
2006-01-01 195405.33333333300
2007-01-01 200333.91666666700
2008-01-01 177649.58333333300
2009-01-01 166249.91666666698
2010-01-01 169237.16666666700
2011-01-01 161771.08333333300
2012-01-01 170384.08333333300
2013-01-01 188728.08333333300
2014-01-01 206369.58333333300
2015-01-01 219458.58333333300
2016-01-01 224398.83333333300
2017-01-01 211718.08333333300