Year	Percent
1950	10.56053
1955	9.17395
1960	10.08158
1965	12.62821
1970	12.71066
1975	12.52651
1980	11.98449
1985	11.77856
1990	13.00907
1995	14.68634
2000	13.80637
2005	10.30581
2010	7.68103
2015	7.07032
2020	7.71487
2025	8.02202
2030	7.14996
2035	5.89506
2040	4.97707
2045	4.74315
2050	4.97777
2055	5.21433
2060	5.1135
2065	4.76024
2070	4.4437
2075	4.37932
2080	4.5542
2085	4.77773
2090	4.84877
2095	4.74545
2100	4.5894