Year	Percent
1950	10.66511
1955	10.34449
1960	10.22316
1965	10.659
1970	9.5185
1975	9.16235
1980	8.27577
1985	7.07693
1990	5.71929
1995	5.37885
2000	5.16637
2005	5.24227
2010	4.64237
2015	4.24638
2020	3.79
2025	3.58906
2030	3.66093
2035	3.77561
2040	3.82842
2045	3.7857
2050	3.69264
2055	3.63538
2060	3.69788
2065	3.848
2070	4.00854
2075	4.09799
2080	4.11006
2085	4.08617
2090	4.09064
2095	4.14978
2100	4.23361