Country 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 Italy 0,8596580162 0,8828780827 0,9296243909 0,9879010038 1,0978153284 1,1077707872 1,1624153052 1,1878345168 1,2056233319 1,2467714521 1,1853943342 1,1455663313 1,0908505774 1,0182064405 0,9689497996 0,9803171579 1,0233071522 1,0421819861 1,0162362877 1,0398384822 1,0808148375 1,121422718 1,1006445231 1,0912707615 1,0859804382 1,1273239851 1,1730416202 1,2057819163 1,2640035358 1,2645841869 1,2515385614 Germany 2,3516120248 2,4202571593 2,4279064415 2,4284736039 2,6035420332 2,6305800411 2,7425901383 2,7294481083 2,7133397293 2,6058794358 2,4662843738 2,3470327617 2,2761554929 2,1827921773 2,1888125507 2,1956506821 2,2408710656 2,2783757954 2,4092961978 2,4722344322 2,4740472905 2,5027554169 2,5396274738 2,503388441 2,505801025 2,5402610312 2,5316854313 2,6894470046 2,8222734892 2,8021716489 2,8832561907 Spain 0,400496328 0,4591761175 0,4522518111 0,4697749463 0,5204052408 0,5784381063 0,6032082332 0,676206406 0,7117632956 0,8019189559 0,8232441015 0,8609131244 0,8590751994 0,7943367447 0,7938435801 0,8130406211 0,8014947796 0,8739716153 0,8613547562 0,9079098978 0,915224053 0,9864187983 1,0488091924 1,0633335077 1,121400355 1,198848751 1,2668880257 1,3514943169 1,3913016144 1,3908562728 1,3339190205 South Korea 1,7968601061 1,8898331472 2,0594959325 2,2558183126 2,3045338794 2,3599064199 2,406770626 2,2626749606 2,1715197494 2,2957020138 2,473156679 2,4044612436 2,4857698409 2,682977288 2,7917558682 3,0091764147 3,210354863 3,3609034384 3,5612386577 3,7378140692 4,0327606266 Unites States 2,3438886758 2,5146657847 2,5778625897 2,6375371378 2,753269556 2,7245593719 2,6956060521 2,6518493144 2,6146337778 2,6480276532 2,7155033776 2,6358537053 2,5119287225 2,412524502 2,5012839833 2,5410417595 2,5692880574 2,5962018076 2,6400172025 2,708621247 2,7187973304 2,6162489849 2,6127528338 2,5453304853 2,5941437247 2,6537083631 2,7223423914 2,8570886049 2,9145435053 2,8340777009