Year	Percent
1950	7.92434
1955	8.3269
1960	9.98834
1965	8.78472
1970	8.60466
1975	8.80915
1980	8.38172
1985	7.05554
1990	5.82351
1995	5.66794
2000	5.92152
2005	5.95487
2010	5.73941
2015	5.77475
2020	5.28949
2025	4.9978
2030	5.04457
2035	5.11816
2040	5.1186
2045	5.05946
2050	4.9578
2055	4.8755
2060	4.88308
2065	4.95605
2070	4.99334
2075	4.97025
2080	4.9014
2085	4.8358
2090	4.80877
2095	4.81889
2100	4.82879