Year	Percent
1950	14.42825
1955	15.74738
1960	12.7135
1965	8.09183
1970	13.62433
1975	11.08026
1980	14.31687
1985	13.04196
1990	8.61689
1995	9.04111
2000	8.75616
2005	8.8769
2010	8.36875
2015	7.79331
2020	6.98199
2025	6.73857
2030	6.74851
2035	6.71574
2040	6.52508
2045	6.20796
2050	5.91411
2055	5.7809
2060	5.79691
2065	5.80899
2070	5.72319
2075	5.55704
2080	5.40077
2085	5.31328
2090	5.30217
2095	5.30821
2100	5.27579