Year	Percent
1950	8.96728
1955	8.66464
1960	9.54833
1965	10.87556
1970	10.2549
1975	8.98166
1980	7.94217
1985	8.78988
1990	9.46004
1995	8.73444
2000	8.06966
2005	7.09236
2010	5.6332
2015	5.10227
2020	5.46337
2025	5.51892
2030	5.47801
2035	5.30735
2040	4.99663
2045	4.73787
2050	4.74311
2055	4.92795
2060	5.07589
2065	5.10423
2070	5.0347
2075	4.93792
2080	4.90938
2085	4.9754
2090	5.06516
2095	5.10499
2100	5.05719